Subject: [@num@/@total@] i.MX2 family: Add basic mach support From: Juergen Beisert This patch adds basic mach support for the mx2 processor family, based on the original freescale code and adapted to mainline kernel coding style. TODO: - split into i.MX21/i.MX27 specific parts - how to include board specific header files everywhere instead in hardware.h - how to register only those devices that are really useable at the specific board - get a sign from freescale for the patch Signed-off-by: Juergen Beisert --- arch/arm/Makefile | 1 arch/arm/mach-mx2/Kconfig | 11 arch/arm/mach-mx2/Makefile | 9 arch/arm/mach-mx2/Makefile.boot | 3 arch/arm/mach-mx2/clock.c | 1556 ++++++++++++++++++++++++++++++++++++ arch/arm/mach-mx2/cpu_imx27.c | 62 + arch/arm/mach-mx2/crm_regs.h | 272 ++++++ arch/arm/mach-mx2/dma.c | 503 +++++++++++ arch/arm/mach-mx2/generic.c | 74 + arch/arm/mach-mx2/serial.c | 308 +++++++ arch/arm/mach-mx2/serial.h | 170 +++ arch/arm/mach-mx2/system.c | 62 + arch/arm/mm/Kconfig | 4 arch/arm/plat-mxc/Kconfig | 1 include/asm-arm/arch-mxc/hardware.h | 3 include/asm-arm/arch-mxc/mxc.h | 3 16 files changed, 3040 insertions(+), 2 deletions(-) Index: arch/arm/Makefile =================================================================== --- arch/arm/Makefile.orig +++ arch/arm/Makefile @@ -138,6 +138,7 @@ endif machine-$(CONFIG_ARCH_DAVINCI) := davinci machine-$(CONFIG_ARCH_KS8695) := ks8695 incdir-$(CONFIG_ARCH_MXC) := mxc + machine-$(CONFIG_ARCH_MX2) := mx2 machine-$(CONFIG_ARCH_MX3) := mx3 ifeq ($(CONFIG_ARCH_EBSA110),y) Index: arch/arm/mm/Kconfig =================================================================== --- arch/arm/mm/Kconfig.orig +++ arch/arm/mm/Kconfig @@ -171,8 +171,8 @@ config CPU_ARM925T # ARM926T config CPU_ARM926T bool "Support ARM926T processor" - depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI - default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI + depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI || ARCH_MX2 + default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_AT91SAM9RL || ARCH_NS9XXX || ARCH_DAVINCI || ARCH_MX2 select CPU_32v5 select CPU_ABRT_EV5TJ select CPU_CACHE_VIVT Index: arch/arm/mach-mx2/cpu_imx27.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/cpu_imx27.c @@ -0,0 +1,62 @@ +/* + * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/* + * i.MX27 specific CPU detection code + */ +#include +#include +#include "crm_regs.h" + +static int cpu_silicon_rev = -1; +static int cpu_partnumber; + +static void query_silicon_parameter(void) +{ + u32 val; + /* + * now we have access to the IO registers. As we need + * the silicon revision very early we read it here to + * avoid any further hooks + */ + val = __raw_readl(IO_ADDRESS(SYSCTRL_BASE_ADDR) + SYS_CHIP_ID); + + cpu_silicon_rev = (int)(val >> 28); + cpu_partnumber = (int)((val >> 12) & 0xFFFF); +} + +/* + * Create inline functions to test for cpu revision + * Function name is cpu_is__rev(rev) + * + * Returns: + * 0 - not the cpu queried + * 1 - cpu and revision match + * 2 - cpu matches, but cpu revision is greater than queried rev + * -1 - cpu matches, but cpu revision is less than queried rev + */ +int cpu_is_mx27_rev(int test_rev) +{ + if (cpu_silicon_rev == -1) + query_silicon_parameter(); + + if (cpu_partnumber != 0x8821) + return 0; + + return test_rev == cpu_silicon_rev ? 1 : test_rev < cpu_silicon_rev ? -1 : 2; +} Index: arch/arm/mach-mx2/clock.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/clock.c @@ -0,0 +1,1556 @@ +/* + * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include "crm_regs.h" + +/* TODO find a header file for it */ +extern void propagate_rate(struct clk *tclk); + +static struct clk ckil_clk; +static struct clk mpll_clk; +static struct clk mpll_main_clk[]; +static struct clk spll_clk; + +static int _clk_enable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(clk->enable_reg); + reg |= 1 << clk->enable_shift; + __raw_writel(reg, clk->enable_reg); + + return 0; +} + +static void _clk_disable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(clk->enable_reg); + reg &= ~(1 << clk->enable_shift); + __raw_writel(reg, clk->enable_reg); +} + +static int _clk_spll_enable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(CCM_CSCR); + reg |= CCM_CSCR_SPEN; + __raw_writel(reg, CCM_CSCR); + + while ((__raw_readl(CCM_SPCTL1) & CCM_SPCTL1_LF) == 0) ; + + return 0; +} + +static void _clk_spll_disable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(CCM_CSCR); + reg &= ~CCM_CSCR_SPEN; + __raw_writel(reg, CCM_CSCR); +} + +static void _clk_pccr01_enable(unsigned long mask0, unsigned long mask1) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR0); + reg |= mask0; + __raw_writel(reg, CCM_PCCR0); + + reg = __raw_readl(CCM_PCCR1); + reg |= mask1; + __raw_writel(reg, CCM_PCCR1); + +} + +static void _clk_pccr01_disable(unsigned long mask0, unsigned long mask1) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR0); + reg &= ~mask0; + __raw_writel(reg, CCM_PCCR0); + + reg = __raw_readl(CCM_PCCR1); + reg &= ~mask1; + __raw_writel(reg, CCM_PCCR1); +} + +static void _clk_pccr10_enable(unsigned long mask1, unsigned long mask0) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR1); + reg |= mask1; + __raw_writel(reg, CCM_PCCR1); + + reg = __raw_readl(CCM_PCCR0); + reg |= mask0; + __raw_writel(reg, CCM_PCCR0); +} + +static void _clk_pccr10_disable(unsigned long mask1, unsigned long mask0) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR1); + reg &= ~mask1; + __raw_writel(reg, CCM_PCCR1); + + reg = __raw_readl(CCM_PCCR0); + reg &= ~mask0; + __raw_writel(reg, CCM_PCCR0); +} + +static int _clk_dma_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_DMA_MASK, CCM_PCCR1_HCLK_DMA_MASK); + + return 0; +} + +static void _clk_dma_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_DMA_MASK, CCM_PCCR1_HCLK_DMA_MASK); +} + +static int _clk_rtic_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_RTIC_MASK, CCM_PCCR1_HCLK_RTIC_MASK); + + return 0; +} + +static void _clk_rtic_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_RTIC_MASK, CCM_PCCR1_HCLK_RTIC_MASK); +} + +static int _clk_emma_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_EMMA_MASK, CCM_PCCR1_HCLK_EMMA_MASK); + + return 0; +} + +static void _clk_emma_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_EMMA_MASK, CCM_PCCR1_HCLK_EMMA_MASK); +} + +static int _clk_slcdc_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_SLCDC_MASK, CCM_PCCR1_HCLK_SLCDC_MASK); + + return 0; +} + +static void _clk_slcdc_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_SLCDC_MASK, CCM_PCCR1_HCLK_SLCDC_MASK); +} + +static int _clk_fec_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_FEC_MASK, CCM_PCCR1_HCLK_FEC_MASK); + + return 0; +} + +static void _clk_fec_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_FEC_MASK, CCM_PCCR1_HCLK_FEC_MASK); +} + +static int _clk_vpu_enable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR1); + reg |= CCM_PCCR1_VPU_BAUD_MASK | CCM_PCCR1_HCLK_VPU_MASK; + __raw_writel(reg, CCM_PCCR1); + + return 0; +} + +static void _clk_vpu_disable(struct clk *clk) +{ + unsigned long reg; + + reg = __raw_readl(CCM_PCCR1); + reg &= ~(CCM_PCCR1_VPU_BAUD_MASK | CCM_PCCR1_HCLK_VPU_MASK); + __raw_writel(reg, CCM_PCCR1); +} + +static int _clk_sahara2_enable(struct clk *clk) +{ + _clk_pccr01_enable(CCM_PCCR0_SAHARA_MASK, CCM_PCCR1_HCLK_SAHARA_MASK); + + return 0; +} + +static void _clk_sahara2_disable(struct clk *clk) +{ + _clk_pccr01_disable(CCM_PCCR0_SAHARA_MASK, CCM_PCCR1_HCLK_SAHARA_MASK); +} + +static int _clk_mstick1_enable(struct clk *clk) +{ + _clk_pccr10_enable(CCM_PCCR1_MSHC_BAUD_MASK, CCM_PCCR0_MSHC_MASK); + + return 0; +} + +static void _clk_mstick1_disable(struct clk *clk) +{ + _clk_pccr10_disable(CCM_PCCR1_MSHC_BAUD_MASK, CCM_PCCR0_MSHC_MASK); +} + +#define CSCR() (__raw_readl(CCM_CSCR)) +#define PCDR0() (__raw_readl(CCM_PCDR0)) +#define PCDR1() (__raw_readl(CCM_PCDR1)) + +static void _clk_pll_recalc(struct clk *clk) +{ + unsigned long mfi = 0, mfn = 0, mfd = 0, pdf = 0; + unsigned long ref_clk; + unsigned long reg; + unsigned long long temp; + + ref_clk = clk->parent->rate; + if (clk->parent == &ckil_clk) { + ref_clk *= 1024; + } + + if (clk == &mpll_clk) { + reg = __raw_readl(CCM_MPCTL0); + pdf = (reg & CCM_MPCTL0_PD_MASK) >> CCM_MPCTL0_PD_OFFSET; + mfd = (reg & CCM_MPCTL0_MFD_MASK) >> CCM_MPCTL0_MFD_OFFSET; + mfi = (reg & CCM_MPCTL0_MFI_MASK) >> CCM_MPCTL0_MFI_OFFSET; + mfn = (reg & CCM_MPCTL0_MFN_MASK) >> CCM_MPCTL0_MFN_OFFSET; + } else if (clk == &spll_clk) { + reg = __raw_readl(CCM_SPCTL0); + /*TODO: This is TO2 Bug */ + if (cpu_is_mx27_rev(CHIP_REV_2_0) == 1) { + __raw_writel(reg, CCM_SPCTL0); + } + pdf = (reg & CCM_SPCTL0_PD_MASK) >> CCM_SPCTL0_PD_OFFSET; + mfd = (reg & CCM_SPCTL0_MFD_MASK) >> CCM_SPCTL0_MFD_OFFSET; + mfi = (reg & CCM_SPCTL0_MFI_MASK) >> CCM_SPCTL0_MFI_OFFSET; + mfn = (reg & CCM_SPCTL0_MFN_MASK) >> CCM_SPCTL0_MFN_OFFSET; + } else { + BUG(); /* oops */ + } + + mfi = (mfi <= 5) ? 5 : mfi; + temp = 2LL * ref_clk * mfn; + do_div(temp, mfd + 1); + temp = 2LL * ref_clk * mfi + temp; + do_div(temp, pdf + 1); + + clk->rate = temp; +} + +static void _clk_mpll_main_recalc(struct clk *clk) +{ + /* i.MX27 TO2: + * clk->id == 0: arm clock source path 1 which is from 2*MPLL/DIV_2 + * clk->id == 1: arm clock source path 2 which is from 2*MPLL/DIV_3 + */ + + if (cpu_is_mx27_rev(CHIP_REV_2_0) == 1 && clk->id == 1) + clk->rate = 2 * clk->parent->rate / 3; + else + clk->rate = clk->parent->rate; +} + +static int _clk_cpu_set_parent(struct clk *clk, struct clk *parent) +{ + int cscr = CSCR(); + + if (clk->parent == parent) + return 0; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + if (parent == &mpll_main_clk[0]) { + cscr |= CCM_CSCR_ARM_SRC; + } else { + if (parent == &mpll_main_clk[1]) { + cscr &= ~CCM_CSCR_ARM_SRC; + } else { + return -EINVAL; + } + } + __raw_writel(CCM_CSCR, cscr); + } else { + return -ENODEV; + } + clk->parent = parent; + return 0; +} + +static unsigned long _clk_cpu_round_rate(struct clk *clk, unsigned long rate) +{ + int div; + div = clk->parent->rate / rate; + if (clk->parent->rate % rate) { + div++; + } + + if (div > 4) { + div = 4; + } + return clk->parent->rate / div; +} + +static int _clk_cpu_set_rate(struct clk *clk, unsigned long rate) +{ + int div, reg; + div = clk->parent->rate / rate; + + if (div > 4 || div < 1 || ((clk->parent->rate / div) != rate)) { + return -EINVAL; + } + div--; + + reg = (CSCR() & ~CCM_CSCR_ARM_MASK) | (div << CCM_CSCR_ARM_OFFSET); + __raw_writel(CCM_CSCR, reg); + clk->rate = rate; + return 0; +} + +static void _clk_cpu_recalc(struct clk *clk) +{ + unsigned long div; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + div = (CSCR() & CCM_CSCR_ARM_MASK) >> CCM_CSCR_ARM_OFFSET; + } else { + div = (CSCR() & CCM_CSCR_PRESC_MASK) >> CCM_CSCR_PRESC_OFFSET; + } + + clk->rate = clk->parent->rate / (div + 1); +} + +static void _clk_ahb_recalc(struct clk *clk) +{ + unsigned long bclk_pdf; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + bclk_pdf = (CSCR() & CCM_CSCR_AHB_MASK) >> CCM_CSCR_AHB_OFFSET; + } else { + bclk_pdf = + (CSCR() & CCM_CSCR_BCLK_MASK) >> CCM_CSCR_BCLK_OFFSET; + } + clk->rate = clk->parent->rate / (bclk_pdf + 1); +} + +static void _clk_perclkx_recalc(struct clk *clk) +{ + unsigned long perclk_pdf; + + if (clk->id < 0 || clk->id > 3) + return; + + perclk_pdf = (PCDR1() >> (clk->id << 3)) & CCM_PCDR1_PERDIV1_MASK; + + clk->rate = clk->parent->rate / (perclk_pdf + 1); +} + +static unsigned long _clk_perclkx_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 div; + + div = clk->parent->rate / rate; + if (clk->parent->rate % rate) + div++; + + if (div > 64) { + div = 64; + } + + return clk->parent->rate / div; +} + +static int _clk_perclkx_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg; + u32 div; + + if (clk->id < 0 || clk->id > 3) + return -EINVAL; + + div = clk->parent->rate / rate; + if (div > 64 || div < 1 || ((clk->parent->rate / div) != rate)) { + return -EINVAL; + } + div--; + + reg = + __raw_readl(CCM_PCDR1) & ~(CCM_PCDR1_PERDIV1_MASK << + (clk->id << 3)); + reg |= div << (clk->id << 3); + __raw_writel(reg, CCM_PCDR1); + + clk->rate = rate; + + return 0; +} + +static void _clk_usb_recalc(struct clk *clk) +{ + unsigned long usb_pdf; + + usb_pdf = (CSCR() & CCM_CSCR_USB_MASK) >> CCM_CSCR_USB_OFFSET; + + clk->rate = clk->parent->rate / (usb_pdf + 1); +} + +static void _clk_ssi1_recalc(struct clk *clk) +{ + unsigned long ssi1_pdf; + + ssi1_pdf = (PCDR0() & CCM_PCDR0_SSI1BAUDDIV_MASK) >> + CCM_PCDR0_SSI1BAUDDIV_OFFSET; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + ssi1_pdf += 4; + } else { + ssi1_pdf = (ssi1_pdf < 2) ? 124 : ssi1_pdf; + } + + clk->rate = 2 * clk->parent->rate / ssi1_pdf; +} + +static void _clk_ssi2_recalc(struct clk *clk) +{ + unsigned long ssi2_pdf; + + ssi2_pdf = (PCDR0() & CCM_PCDR0_SSI2BAUDDIV_MASK) >> + CCM_PCDR0_SSI2BAUDDIV_OFFSET; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + ssi2_pdf += 4; + } else { + ssi2_pdf = (ssi2_pdf < 2) ? 124 : ssi2_pdf; + } + + clk->rate = 2 * clk->parent->rate / ssi2_pdf; +} + +static void _clk_nfc_recalc(struct clk *clk) +{ + unsigned long nfc_pdf; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + nfc_pdf = + (PCDR0() & CCM_PCDR0_NFCDIV2_MASK) >> + CCM_PCDR0_NFCDIV2_OFFSET; + } else { + nfc_pdf = + (PCDR0() & CCM_PCDR0_NFCDIV_MASK) >> + CCM_PCDR0_NFCDIV_OFFSET; + } + + clk->rate = clk->parent->rate / (nfc_pdf + 1); +} + +static void _clk_vpu_recalc(struct clk *clk) +{ + unsigned long vpu_pdf; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + vpu_pdf = + (PCDR0() & CCM_PCDR0_VPUDIV2_MASK) >> + CCM_PCDR0_VPUDIV2_OFFSET; + vpu_pdf += 4; + } else { + vpu_pdf = + (PCDR0() & CCM_PCDR0_VPUDIV_MASK) >> + CCM_PCDR0_VPUDIV_OFFSET; + vpu_pdf = (vpu_pdf < 2) ? 124 : vpu_pdf; + } + clk->rate = 2 * clk->parent->rate / vpu_pdf; +} + +static void _clk_ipg_recalc(struct clk *clk) +{ + unsigned long ipg_pdf; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + ipg_pdf = 1; + } else { + ipg_pdf = (CSCR() & CCM_CSCR_IPDIV) >> CCM_CSCR_IPDIV_OFFSET; + } + + clk->rate = clk->parent->rate / (ipg_pdf + 1); +} + +static unsigned long _clk_parent_round_rate(struct clk *clk, unsigned long rate) +{ + return clk->parent->round_rate(clk->parent, rate); +} + +static int _clk_parent_set_rate(struct clk *clk, unsigned long rate) +{ + int ret; + if ((ret = clk->parent->set_rate(clk->parent, rate)) == 0) + clk->rate = rate; + return ret; +} + +/* + * the high frequency external clock reference + * Default case is 26MHz. Could be changed at runtime + * with a call to change_external_high_reference() + */ +static struct clk ckih_clk = { + .name = "ckih", + .rate = 26000000, + .flags = RATE_PROPAGATES, +}; + +/* + * the low frequency external clock reference + * Default case is 32.768kHz Could be changed at runtime + * with a call to change_external_low_reference() + */ +static struct clk ckil_clk = { + .name = "ckil", + .rate = 32768, + .flags = RATE_PROPAGATES, +}; + +static struct clk mpll_clk = { + .name = "mpll", + .parent = &ckih_clk, + .recalc = _clk_pll_recalc, + .flags = RATE_PROPAGATES, +}; + +static struct clk mpll_main_clk[] = { + { + /* For i.MX27 TO2, it is the MPLL path 1 of ARM core + * It provide the clock source whose rate is same as MPLL + */ + .name = "mpll_main", + .id = 0, + .parent = &mpll_clk, + .recalc = _clk_mpll_main_recalc,}, + { + /* For i.MX27 TO2, it is the MPLL path 1 of ARM core + * It provide the clock source whose rate is same as MPLL + */ + .name = "mpll_main", + .id = 1, + .parent = &mpll_clk, + .recalc = _clk_mpll_main_recalc,} +}; + +static struct clk spll_clk = { + .name = "spll", + .parent = &ckih_clk, + .recalc = _clk_pll_recalc, + .enable = _clk_spll_enable, + .disable = _clk_spll_disable, + .flags = RATE_PROPAGATES, +}; + +static struct clk cpu_clk = { + .name = "cpu_clk", + .parent = &mpll_main_clk[1], + .set_parent = _clk_cpu_set_parent, + .round_rate = _clk_cpu_round_rate, + .set_rate = _clk_cpu_set_rate, + .recalc = _clk_cpu_recalc, + .flags = RATE_PROPAGATES, +}; + +static struct clk ahb_clk = { + .name = "ahb_clk", + .parent = &mpll_main_clk[1], + .recalc = _clk_ahb_recalc, + .flags = RATE_PROPAGATES, +}; + +static struct clk ipg_clk = { + .name = "ipg_clk", + .parent = &ahb_clk, + .recalc = _clk_ipg_recalc, + .flags = RATE_PROPAGATES, +}; + +static struct clk per_clk[] = { + { + .name = "per_clk", + .id = 0, + .parent = &mpll_main_clk[1], + .recalc = _clk_perclkx_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_PERCLK1_OFFSET, + .disable = _clk_disable, + .flags = RATE_PROPAGATES,}, + { + .name = "per_clk", + .id = 1, + .parent = &mpll_main_clk[1], + .recalc = _clk_perclkx_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_PERCLK2_OFFSET, + .disable = _clk_disable, + .flags = RATE_PROPAGATES,}, + { + .name = "per_clk", + .id = 2, + .parent = &mpll_main_clk[1], + .round_rate = _clk_perclkx_round_rate, + .set_rate = _clk_perclkx_set_rate, + .recalc = _clk_perclkx_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_PERCLK3_OFFSET, + .disable = _clk_disable, + .flags = RATE_PROPAGATES,}, + { + .name = "per_clk", + .id = 3, + .parent = &mpll_main_clk[1], + .round_rate = _clk_perclkx_round_rate, + .set_rate = _clk_perclkx_set_rate, + .recalc = _clk_perclkx_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_PERCLK4_OFFSET, + .disable = _clk_disable, + .flags = RATE_PROPAGATES,}, +}; + +struct clk uart1_clk[] = { + { + .name = "uart_clk", + .id = 0, + .parent = &per_clk[0], + .secondary = &uart1_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART1_OFFSET, + .disable = _clk_disable,}, +}; + +struct clk uart2_clk[] = { + { + .name = "uart_clk", + .id = 1, + .parent = &per_clk[0], + .secondary = &uart2_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART2_OFFSET, + .disable = _clk_disable,}, +}; + +struct clk uart3_clk[] = { + { + .name = "uart_clk", + .id = 2, + .parent = &per_clk[0], + .secondary = &uart3_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 2, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART3_OFFSET, + .disable = _clk_disable,}, +}; + +struct clk uart4_clk[] = { + { + .name = "uart_clk", + .id = 3, + .parent = &per_clk[0], + .secondary = &uart4_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 3, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART4_OFFSET, + .disable = _clk_disable,}, +}; + +struct clk uart5_clk[] = { + { + .name = "uart_clk", + .id = 4, + .parent = &per_clk[0], + .secondary = &uart5_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 4, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART5_OFFSET, + .disable = _clk_disable,}, +}; + +struct clk uart6_clk[] = { + { + .name = "uart_clk", + .id = 5, + .parent = &per_clk[0], + .secondary = &uart6_clk[1],}, + { + .name = "uart_ipg_clk", + .id = 5, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_UART6_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt1_clk[] = { + { + .name = "gpt_clk", + .id = 0, + .parent = &per_clk[0], + .secondary = &gpt1_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT1_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt2_clk[] = { + { + .name = "gpt_clk", + .id = 1, + .parent = &per_clk[0], + .secondary = &gpt2_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT2_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt3_clk[] = { + { + .name = "gpt_clk", + .id = 2, + .parent = &per_clk[0], + .secondary = &gpt3_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 2, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT3_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt4_clk[] = { + { + .name = "gpt_clk", + .id = 3, + .parent = &per_clk[0], + .secondary = &gpt4_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 3, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT4_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt5_clk[] = { + { + .name = "gpt_clk", + .id = 4, + .parent = &per_clk[0], + .secondary = &gpt5_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 4, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT5_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk gpt6_clk[] = { + { + .name = "gpt_clk", + .id = 5, + .parent = &per_clk[0], + .secondary = &gpt6_clk[1],}, + { + .name = "gpt_ipg_clk", + .id = 5, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_GPT6_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk pwm_clk[] = { + { + .name = "pwm_clk", + .parent = &per_clk[0], + .secondary = &pwm_clk[1],}, + { + .name = "pwm_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_PWM_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk sdhc1_clk[] = { + { + .name = "sdhc_clk", + .id = 0, + .parent = &per_clk[1], + .secondary = &sdhc1_clk[1],}, + { + .name = "sdhc_ipg_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SDHC1_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk sdhc2_clk[] = { + { + .name = "sdhc_clk", + .id = 1, + .parent = &per_clk[1], + .secondary = &sdhc2_clk[1],}, + { + .name = "sdhc_ipg_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SDHC2_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk sdhc3_clk[] = { + { + .name = "sdhc_clk", + .id = 2, + .parent = &per_clk[1], + .secondary = &sdhc3_clk[1],}, + { + .name = "sdhc_ipg_clk", + .id = 2, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SDHC3_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk cspi1_clk[] = { + { + .name = "cspi_clk", + .id = 0, + .parent = &per_clk[1], + .secondary = &cspi1_clk[1],}, + { + .name = "cspi_ipg_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_CSPI1_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk cspi2_clk[] = { + { + .name = "cspi_clk", + .id = 1, + .parent = &per_clk[1], + .secondary = &cspi2_clk[1],}, + { + .name = "cspi_ipg_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_CSPI2_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk cspi3_clk[] = { + { + .name = "cspi_clk", + .id = 2, + .parent = &per_clk[1], + .secondary = &cspi3_clk[1],}, + { + .name = "cspi_ipg_clk", + .id = 2, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_CSPI3_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk lcdc_clk[] = { + { + .name = "lcdc_clk", + .parent = &per_clk[2], + .secondary = &lcdc_clk[1], + .round_rate = _clk_parent_round_rate, + .set_rate = _clk_parent_set_rate,}, + { + .name = "lcdc_ipg_clk", + .parent = &ipg_clk, + .secondary = &lcdc_clk[2], + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_LCDC_OFFSET, + .disable = _clk_disable,}, + { + .name = "lcdc_ahb_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_LCDC_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk csi_clk[] = { + { + .name = "csi_perclk", + .parent = &per_clk[3], + .secondary = &csi_clk[1], + .round_rate = _clk_parent_round_rate, + .set_rate = _clk_parent_set_rate,}, + { + .name = "csi_ahb_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_CSI_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk usb_clk[] = { + { + .name = "usb_clk", + .parent = &spll_clk, + .recalc = _clk_usb_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_USBOTG_OFFSET, + .disable = _clk_disable,}, + { + .name = "usb_ahb_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_USBOTG_OFFSET, + .disable = _clk_disable,} +}; + +static struct clk ssi1_clk[] = { + { + .name = "ssi_clk", + .id = 0, + .parent = &mpll_main_clk[1], + .secondary = &ssi1_clk[1], + .recalc = _clk_ssi1_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_SSI1_BAUD_OFFSET, + .disable = _clk_disable,}, + { + .name = "ssi_ipg_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SSI1_IPG_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk ssi2_clk[] = { + { + .name = "ssi_clk", + .id = 1, + .parent = &mpll_main_clk[1], + .secondary = &ssi2_clk[1], + .recalc = _clk_ssi2_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_SSI2_BAUD_OFFSET, + .disable = _clk_disable,}, + { + .name = "ssi_ipg_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SSI2_IPG_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk nfc_clk = { + .name = "nfc_clk", + .parent = &cpu_clk, + .recalc = _clk_nfc_recalc, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_NFC_BAUD_OFFSET, + .disable = _clk_disable, +}; + +static struct clk vpu_clk = { + .name = "vpu_clk", + .parent = &mpll_main_clk[1], + .recalc = _clk_vpu_recalc, + .enable = _clk_vpu_enable, + .disable = _clk_vpu_disable, +}; + +static struct clk dma_clk = { + .name = "dma_clk", + .parent = &ahb_clk, + .enable = _clk_dma_enable, + .disable = _clk_dma_disable, +}; + +static struct clk rtic_clk = { + .name = "rtic_clk", + .parent = &ahb_clk, + .enable = _clk_rtic_enable, + .disable = _clk_rtic_disable, +}; + +static struct clk brom_clk = { + .name = "brom_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_BROM_OFFSET, + .disable = _clk_disable, +}; + +static struct clk emma_clk = { + .name = "emma_clk", + .parent = &ahb_clk, + .enable = _clk_emma_enable, + .disable = _clk_emma_disable, +}; + +static struct clk slcdc_clk = { + .name = "slcdc_clk", + .parent = &ahb_clk, + .enable = _clk_slcdc_enable, + .disable = _clk_slcdc_disable, +}; + +static struct clk fec_clk = { + .name = "fec_clk", + .parent = &ahb_clk, + .enable = _clk_fec_enable, + .disable = _clk_fec_disable, +}; + +static struct clk emi_clk = { + .name = "emi_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_EMI_OFFSET, + .disable = _clk_disable, +}; + +static struct clk sahara2_clk = { + .name = "sahara_clk", + .parent = &ahb_clk, + .enable = _clk_sahara2_enable, + .disable = _clk_sahara2_disable, +}; + +static struct clk ata_clk = { + .name = "ata_clk", + .parent = &ahb_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_HCLK_ATA_OFFSET, + .disable = _clk_disable, +}; + +static struct clk mstick1_clk = { + .name = "mstick1_clk", + .parent = &ipg_clk, + .enable = _clk_mstick1_enable, + .disable = _clk_mstick1_disable, +}; + +static struct clk wdog_clk = { + .name = "wdog_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR1_WDT_OFFSET, + .disable = _clk_disable, +}; + +static struct clk gpio_clk = { + .name = "gpio_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR1, + .enable_shift = CCM_PCCR0_GPIO_OFFSET, + .disable = _clk_disable, +}; + +static struct clk i2c_clk[] = { + { + .name = "i2c_clk", + .id = 0, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_I2C1_OFFSET, + .disable = _clk_disable,}, + { + .name = "i2c_clk", + .id = 1, + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_I2C2_OFFSET, + .disable = _clk_disable,}, +}; + +static struct clk iim_clk = { + .name = "iim_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_IIM_OFFSET, + .disable = _clk_disable, +}; + +static struct clk kpp_clk = { + .name = "kpp_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_KPP_OFFSET, + .disable = _clk_disable, +}; + +static struct clk owire_clk = { + .name = "owire_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_OWIRE_OFFSET, + .disable = _clk_disable, +}; + +static struct clk rtc_clk = { + .name = "rtc_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_RTC_OFFSET, + .disable = _clk_disable, +}; + +static struct clk scc_clk = { + .name = "scc_clk", + .parent = &ipg_clk, + .enable = _clk_enable, + .enable_reg = CCM_PCCR0, + .enable_shift = CCM_PCCR0_SCC_OFFSET, + .disable = _clk_disable, +}; + +static unsigned long _clk_clko_round_rate(struct clk *clk, unsigned long rate) +{ + u32 div; + + div = clk->parent->rate / rate; + if (clk->parent->rate % rate) + div++; + + if (div > 8) { + div = 8; + } + + return clk->parent->rate / div; +} + +static int _clk_clko_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg; + u32 div; + + div = clk->parent->rate / rate; + + if (div > 8 || div < 1 || ((clk->parent->rate / div) != rate)) { + return -EINVAL; + } + div--; + + reg = __raw_readl(CCM_PCDR0) & ~CCM_PCDR0_CLKODIV_MASK; + reg |= div << CCM_PCDR0_CLKODIV_OFFSET; + __raw_writel(reg, CCM_PCDR0); + + clk->rate = rate; + + return 0; +} + +static void _clk_clko_recalc(struct clk *clk) +{ + u32 div; + + div = __raw_readl(CCM_PCDR0) & CCM_PCDR0_CLKODIV_MASK >> + CCM_PCDR0_CLKODIV_OFFSET; + div++; + + clk->rate = clk->parent->rate / div; +} + +static int _clk_clko_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(CCM_CCSR) & ~CCM_CCSR_CLKOSEL_MASK; + + if (parent == &ckil_clk) { + reg |= 0 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &ckih_clk) { + reg |= 2 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == mpll_clk.parent) { + reg |= 3 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == spll_clk.parent) { + reg |= 4 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &mpll_clk) { + reg |= 5 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &spll_clk) { + reg |= 6 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &cpu_clk) { + reg |= 7 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &ahb_clk) { + reg |= 8 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &ipg_clk) { + reg |= 9 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &per_clk[0]) { + reg |= 0xA << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &per_clk[1]) { + reg |= 0xB << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &per_clk[2]) { + reg |= 0xC << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &per_clk[3]) { + reg |= 0xD << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &ssi1_clk[0]) { + reg |= 0xE << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &ssi2_clk[0]) { + reg |= 0xF << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &nfc_clk) { + reg |= 0x10 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &mstick1_clk) { + reg |= 0x11 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &vpu_clk) { + reg |= 0x12 << CCM_CCSR_CLKOSEL_OFFSET; + } else if (parent == &usb_clk[0]) { + reg |= 0x15 << CCM_CCSR_CLKOSEL_OFFSET; + } else { + return -EINVAL; + } + + __raw_writel(reg, CCM_CCSR); + + return 0; +} + +static int _clk_clko_enable(struct clk *clk) +{ + u32 reg; + + reg = __raw_readl(CCM_PCDR0) | CCM_PCDR0_CLKO_EN; + __raw_writel(reg, CCM_PCDR0); + + return 0; +} + +static void _clk_clko_disable(struct clk *clk) +{ + u32 reg; + + reg = __raw_readl(CCM_PCDR0) & ~CCM_PCDR0_CLKO_EN; + __raw_writel(reg, CCM_PCDR0); +} + +static struct clk clko_clk = { + .name = "clko_clk", + .recalc = _clk_clko_recalc, + .set_rate = _clk_clko_set_rate, + .round_rate = _clk_clko_round_rate, + .set_parent = _clk_clko_set_parent, + .enable = _clk_clko_enable, + .disable = _clk_clko_disable, +}; + +static struct clk *mxc_clks[] = { + &ckih_clk, + &ckil_clk, + &mpll_clk, + &mpll_main_clk[0], + &mpll_main_clk[1], + &spll_clk, + &cpu_clk, + &ahb_clk, + &ipg_clk, + &per_clk[0], + &per_clk[1], + &per_clk[2], + &per_clk[3], + &clko_clk, + &uart1_clk[0], + &uart1_clk[1], + &uart2_clk[0], + &uart2_clk[1], + &uart3_clk[0], + &uart3_clk[1], + &uart4_clk[0], + &uart4_clk[1], + &uart5_clk[0], + &uart5_clk[1], + &uart6_clk[0], + &uart6_clk[1], + &gpt1_clk[0], + &gpt1_clk[1], + &gpt2_clk[0], + &gpt2_clk[1], + &gpt3_clk[0], + &gpt3_clk[1], + &gpt4_clk[0], + &gpt4_clk[1], + &gpt5_clk[0], + &gpt5_clk[1], + &gpt6_clk[0], + &gpt6_clk[1], + &pwm_clk[0], + &pwm_clk[1], + &sdhc1_clk[0], + &sdhc1_clk[1], + &sdhc2_clk[0], + &sdhc2_clk[1], + &sdhc3_clk[0], + &sdhc3_clk[1], + &cspi1_clk[0], + &cspi1_clk[1], + &cspi2_clk[0], + &cspi2_clk[1], + &cspi3_clk[0], + &cspi3_clk[1], + &lcdc_clk[0], + &lcdc_clk[1], + &lcdc_clk[2], + &csi_clk[0], + &csi_clk[1], + &usb_clk[0], + &usb_clk[1], + &ssi1_clk[0], + &ssi1_clk[1], + &ssi2_clk[0], + &ssi2_clk[1], + &nfc_clk, + &vpu_clk, + &dma_clk, + &rtic_clk, + &brom_clk, + &emma_clk, + &slcdc_clk, + &fec_clk, + &emi_clk, + &sahara2_clk, + &ata_clk, + &mstick1_clk, + &wdog_clk, + &gpio_clk, + &i2c_clk[0], + &i2c_clk[1], + &iim_clk, + &kpp_clk, + &owire_clk, + &rtc_clk, + &scc_clk, +}; + +void __init change_external_high_reference(unsigned long new_ref) +{ + ckih_clk.rate = new_ref; +} + +void __init change_external_low_reference(unsigned long new_ref) +{ + ckih_clk.rate = new_ref; +} + +unsigned long __init clk_early_get_timer_rate(void) +{ + return per_clk[0].rate; +} + +static void __init probe_mxc_clocks(void) +{ + int i; + + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + if (CSCR() & 0x8000) { + cpu_clk.parent = &mpll_main_clk[0]; + } + + if (!(CSCR() & 0x00800000)) { + ssi2_clk[0].parent = &spll_clk; + } + + if (!(CSCR() & 0x00400000)) { + ssi1_clk[0].parent = &spll_clk; + } + + if (!(CSCR() & 0x00200000)) { + vpu_clk.parent = &spll_clk; + } + } else { + cpu_clk.parent = &mpll_clk; + cpu_clk.set_parent = NULL; + cpu_clk.round_rate = NULL; + cpu_clk.set_rate = NULL; + ahb_clk.parent = &mpll_clk; + + for (i = 0; i < sizeof(per_clk) / sizeof(per_clk[0]); i++) { + per_clk[i].parent = &mpll_clk; + } + + ssi1_clk[0].parent = &mpll_clk; + ssi2_clk[0].parent = &mpll_clk; + + vpu_clk.parent = &mpll_clk; + } +} + +/* + * must be called very early to get information about the + * available clock rate when the timer framework starts + */ +int __init mxc_clocks_init(void) +{ + u32 cscr; + struct clk **clkp; + + /* detect clock reference for both system PLL */ + cscr = CSCR(); + if (cscr & CCM_CSCR_MCU) + mpll_clk.parent = &ckih_clk; + else + mpll_clk.parent = &ckil_clk; + + if (cscr & CCM_CSCR_SP) { + spll_clk.parent = &ckih_clk; + } else { + spll_clk.parent = &ckil_clk; + } + + probe_mxc_clocks(); + + mpll_clk.recalc(&mpll_clk); + if (cpu_is_mx27_rev(CHIP_REV_2_0) > 0) { + mpll_main_clk[0].recalc(&mpll_main_clk[0]); + mpll_main_clk[1].recalc(&mpll_main_clk[1]); + } + per_clk[0].recalc(&per_clk[0]); + per_clk[0].enable(&per_clk[0]); + gpt1_clk[1].enable(&gpt1_clk[1]); + + for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++) + clk_register(*clkp); + + /* Turn off all possible clocks */ + __raw_writel(CCM_PCCR0_GPT1_MASK, CCM_PCCR0); + __raw_writel(CCM_PCCR1_PERCLK1_MASK | CCM_PCCR1_HCLK_EMI_MASK, + CCM_PCCR1); + spll_clk.disable(&spll_clk); + + /* This will propagate to all children and init all the clock rates */ + propagate_rate(&ckih_clk); + propagate_rate(&ckil_clk); + + clk_enable(&emi_clk); + clk_enable(&gpio_clk); + clk_enable(&iim_clk); + clk_enable(&gpt1_clk[0]); + + return 0; +} + Index: arch/arm/mach-mx2/crm_regs.h =================================================================== --- /dev/null +++ arch/arm/mach-mx2/crm_regs.h @@ -0,0 +1,272 @@ +/* + * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __ARCH_ARM_MACH_MX2_CRM_REGS_H__ +#define __ARCH_ARM_MACH_MX2_CRM_REGS_H__ + +#include + +/* Register offsets */ +#define CCM_CSCR (IO_ADDRESS(CCM_BASE_ADDR) + 0x0) +#define CCM_MPCTL0 (IO_ADDRESS(CCM_BASE_ADDR) + 0x4) +#define CCM_MPCTL1 (IO_ADDRESS(CCM_BASE_ADDR) + 0x8) +#define CCM_SPCTL0 (IO_ADDRESS(CCM_BASE_ADDR) + 0xC) +#define CCM_SPCTL1 (IO_ADDRESS(CCM_BASE_ADDR) + 0x10) +#define CCM_OSC26MCTL (IO_ADDRESS(CCM_BASE_ADDR) + 0x14) +#define CCM_PCDR0 (IO_ADDRESS(CCM_BASE_ADDR) + 0x18) +#define CCM_PCDR1 (IO_ADDRESS(CCM_BASE_ADDR) + 0x1c) +#define CCM_PCCR0 (IO_ADDRESS(CCM_BASE_ADDR) + 0x20) +#define CCM_PCCR1 (IO_ADDRESS(CCM_BASE_ADDR) + 0x24) +#define CCM_CCSR (IO_ADDRESS(CCM_BASE_ADDR) + 0x28) +#define CCM_PMCTL (IO_ADDRESS(CCM_BASE_ADDR) + 0x2c) +#define CCM_PMCOUNT (IO_ADDRESS(CCM_BASE_ADDR) + 0x30) +#define CCM_WKGDCTL (IO_ADDRESS(CCM_BASE_ADDR) + 0x34) + +#define CCM_CSCR_USB_OFFSET 28 +#define CCM_CSCR_USB_MASK (0x7 << 28) +#define CCM_CSCR_SD_OFFSET 24 +#define CCM_CSCR_SD_MASK (0x3 << 24) +#define CCM_CSCR_SSI2 (1 << 23) +#define CCM_CSCR_SSI2_OFFSET 23 +#define CCM_CSCR_SSI1 (1 << 22) +#define CCM_CSCR_SSI1_OFFSET 22 +#define CCM_CSCR_VPU (1 << 21) +#define CCM_CSCR_VPU_OFFSET 21 +#define CCM_CSCR_MSHC (1 << 20) +#define CCM_CSCR_SPLLRES (1 << 19) +#define CCM_CSCR_MPLLRES (1 << 18) +#define CCM_CSCR_SP (1 << 17) +#define CCM_CSCR_MCU (1 << 16) +/* CCM_CSCR_ARM_xxx just be avaliable on i.MX27 TO2*/ +#define CCM_CSCR_ARM_SRC (1 << 15) +#define CCM_CSCR_ARM_OFFSET 12 +#define CCM_CSCR_ARM_MASK (0x3 << 12) +/* CCM_CSCR_ARM_xxx just be avaliable on i.MX27 TO2*/ +#define CCM_CSCR_PRESC_OFFSET 13 +#define CCM_CSCR_PRESC_MASK (0x7 << 13) +#define CCM_CSCR_BCLK_OFFSET 9 +#define CCM_CSCR_BCLK_MASK (0xf << 9) +#define CCM_CSCR_IPDIV_OFFSET 8 +#define CCM_CSCR_IPDIV (1 << 8) +/* CCM_CSCR_AHB_xxx just be avaliable on i.MX27 TO2*/ +#define CCM_CSCR_AHB_OFFSET 8 +#define CCM_CSCR_AHB_MASK (0x3 << 8) +/* CCM_CSCR_AHB_xxx just be avaliable on i.MX27 TO2*/ +#define CCM_CSCR_OSC26MDIV (1 << 4) +#define CCM_CSCR_OSC26M (1 << 3) +#define CCM_CSCR_FPM (1 << 2) +#define CCM_CSCR_SPEN (1 << 1) +#define CCM_CSCR_MPEN 1 + +#define CCM_MPCTL0_CPLM (1 << 31) +#define CCM_MPCTL0_PD_OFFSET 26 +#define CCM_MPCTL0_PD_MASK (0xf << 26) +#define CCM_MPCTL0_MFD_OFFSET 16 +#define CCM_MPCTL0_MFD_MASK (0x3ff << 16) +#define CCM_MPCTL0_MFI_OFFSET 10 +#define CCM_MPCTL0_MFI_MASK (0xf << 10) +#define CCM_MPCTL0_MFN_OFFSET 0 +#define CCM_MPCTL0_MFN_MASK 0x3ff + +#define CCM_MPCTL1_LF (1 << 15) +#define CCM_MPCTL1_BRMO (1 << 6) + +#define CCM_SPCTL0_CPLM (1 << 31) +#define CCM_SPCTL0_PD_OFFSET 26 +#define CCM_SPCTL0_PD_MASK (0xf << 26) +#define CCM_SPCTL0_MFD_OFFSET 16 +#define CCM_SPCTL0_MFD_MASK (0x3ff << 16) +#define CCM_SPCTL0_MFI_OFFSET 10 +#define CCM_SPCTL0_MFI_MASK (0xf << 10) +#define CCM_SPCTL0_MFN_OFFSET 0 +#define CCM_SPCTL0_MFN_MASK 0x3ff + +#define CCM_SPCTL1_LF (1 << 15) +#define CCM_SPCTL1_BRMO (1 << 6) + +#define CCM_OSC26MCTL_PEAK_OFFSET 16 +#define CCM_OSC26MCTL_PEAK_MASK (0x3 << 16) +#define CCM_OSC26MCTL_AGC_OFFSET 8 +#define CCM_OSC26MCTL_AGC_MASK (0x3f << 8) +#define CCM_OSC26MCTL_ANATEST_OFFSET 0 +#define CCM_OSC26MCTL_ANATEST_MASK 0x3f + +#define CCM_PCDR0_SSI2BAUDDIV_OFFSET 26 +#define CCM_PCDR0_SSI2BAUDDIV_MASK (0x3f << 26) +#define CCM_PCDR0_CLKO_EN 25 +#define CCM_PCDR0_CLKODIV_OFFSET 22 +#define CCM_PCDR0_CLKODIV_MASK (0x7 << 22) +#define CCM_PCDR0_SSI1BAUDDIV_OFFSET 16 +#define CCM_PCDR0_SSI1BAUDDIV_MASK (0x3f << 16) +/*The difinition for i.MX27 TO2*/ +#define CCM_PCDR0_VPUDIV2_OFFSET 10 +#define CCM_PCDR0_VPUDIV2_MASK (0x3f << 10) +#define CCM_PCDR0_NFCDIV2_OFFSET 6 +#define CCM_PCDR0_NFCDIV2_MASK (0xf << 6) +#define CCM_PCDR0_MSHCDIV2_MASK 0x3f +/*The difinition for i.MX27 TO2*/ +#define CCM_PCDR0_NFCDIV_OFFSET 12 +#define CCM_PCDR0_NFCDIV_MASK (0xf << 12) +#define CCM_PCDR0_VPUDIV_OFFSET 8 +#define CCM_PCDR0_VPUDIV_MASK (0xf << 8) +#define CCM_PCDR0_MSHCDIV_OFFSET 0 +#define CCM_PCDR0_MSHCDIV_MASK 0x1f + +#define CCM_PCDR1_PERDIV4_OFFSET 24 +#define CCM_PCDR1_PERDIV4_MASK (0x3f << 24) +#define CCM_PCDR1_PERDIV3_OFFSET 16 +#define CCM_PCDR1_PERDIV3_MASK (0x3f << 16) +#define CCM_PCDR1_PERDIV2_OFFSET 8 +#define CCM_PCDR1_PERDIV2_MASK (0x3f << 8) +#define CCM_PCDR1_PERDIV1_OFFSET 0 +#define CCM_PCDR1_PERDIV1_MASK 0x3f + +#define CCM_PCCR0_CSPI1_OFFSET 31 +#define CCM_PCCR0_CSPI1_MASK (1 << 31) +#define CCM_PCCR0_CSPI2_OFFSET 30 +#define CCM_PCCR0_CSPI2_MASK (1 << 30) +#define CCM_PCCR0_CSPI3_OFFSET 29 +#define CCM_PCCR0_CSPI3_MASK (1 << 29) +#define CCM_PCCR0_DMA_OFFSET 28 +#define CCM_PCCR0_DMA_MASK (1 << 28) +#define CCM_PCCR0_EMMA_OFFSET 27 +#define CCM_PCCR0_EMMA_MASK (1 << 27) +#define CCM_PCCR0_FEC_OFFSET 26 +#define CCM_PCCR0_FEC_MASK (1 << 26) +#define CCM_PCCR0_GPIO_OFFSET 25 +#define CCM_PCCR0_GPIO_MASK (1 << 25) +#define CCM_PCCR0_GPT1_OFFSET 24 +#define CCM_PCCR0_GPT1_MASK (1 << 24) +#define CCM_PCCR0_GPT2_OFFSET 23 +#define CCM_PCCR0_GPT2_MASK (1 << 23) +#define CCM_PCCR0_GPT3_OFFSET 22 +#define CCM_PCCR0_GPT3_MASK (1 << 22) +#define CCM_PCCR0_GPT4_OFFSET 21 +#define CCM_PCCR0_GPT4_MASK (1 << 21) +#define CCM_PCCR0_GPT5_OFFSET 20 +#define CCM_PCCR0_GPT5_MASK (1 << 20) +#define CCM_PCCR0_GPT6_OFFSET 19 +#define CCM_PCCR0_GPT6_MASK (1 << 19) +#define CCM_PCCR0_I2C1_OFFSET 18 +#define CCM_PCCR0_I2C1_MASK (1 << 18) +#define CCM_PCCR0_I2C2_OFFSET 17 +#define CCM_PCCR0_I2C2_MASK (1 << 17) +#define CCM_PCCR0_IIM_OFFSET 16 +#define CCM_PCCR0_IIM_MASK (1 << 16) +#define CCM_PCCR0_KPP_OFFSET 15 +#define CCM_PCCR0_KPP_MASK (1 << 15) +#define CCM_PCCR0_LCDC_OFFSET 14 +#define CCM_PCCR0_LCDC_MASK (1 << 14) +#define CCM_PCCR0_MSHC_OFFSET 13 +#define CCM_PCCR0_MSHC_MASK (1 << 13) +#define CCM_PCCR0_OWIRE_OFFSET 12 +#define CCM_PCCR0_OWIRE_MASK (1 << 12) +#define CCM_PCCR0_PWM_OFFSET 11 +#define CCM_PCCR0_PWM_MASK (1 << 11) +#define CCM_PCCR0_RTC_OFFSET 9 +#define CCM_PCCR0_RTC_MASK (1 << 9) +#define CCM_PCCR0_RTIC_OFFSET 8 +#define CCM_PCCR0_RTIC_MASK (1 << 8) +#define CCM_PCCR0_SAHARA_OFFSET 7 +#define CCM_PCCR0_SAHARA_MASK (1 << 7) +#define CCM_PCCR0_SCC_OFFSET 6 +#define CCM_PCCR0_SCC_MASK (1 << 6) +#define CCM_PCCR0_SDHC1_OFFSET 5 +#define CCM_PCCR0_SDHC1_MASK (1 << 5) +#define CCM_PCCR0_SDHC2_OFFSET 4 +#define CCM_PCCR0_SDHC2_MASK (1 << 4) +#define CCM_PCCR0_SDHC3_OFFSET 3 +#define CCM_PCCR0_SDHC3_MASK (1 << 3) +#define CCM_PCCR0_SLCDC_OFFSET 2 +#define CCM_PCCR0_SLCDC_MASK (1 << 2) +#define CCM_PCCR0_SSI1_IPG_OFFSET 1 +#define CCM_PCCR0_SSI1_IPG_MASK (1 << 1) +#define CCM_PCCR0_SSI2_IPG_OFFSET 0 +#define CCM_PCCR0_SSI2_IPG_MASK (1 << 0) + +#define CCM_PCCR1_UART1_OFFSET 31 +#define CCM_PCCR1_UART1_MASK (1 << 31) +#define CCM_PCCR1_UART2_OFFSET 30 +#define CCM_PCCR1_UART2_MASK (1 << 30) +#define CCM_PCCR1_UART3_OFFSET 29 +#define CCM_PCCR1_UART3_MASK (1 << 29) +#define CCM_PCCR1_UART4_OFFSET 28 +#define CCM_PCCR1_UART4_MASK (1 << 28) +#define CCM_PCCR1_UART5_OFFSET 27 +#define CCM_PCCR1_UART5_MASK (1 << 27) +#define CCM_PCCR1_UART6_OFFSET 26 +#define CCM_PCCR1_UART6_MASK (1 << 26) +#define CCM_PCCR1_USBOTG_OFFSET 25 +#define CCM_PCCR1_USBOTG_MASK (1 << 25) +#define CCM_PCCR1_WDT_OFFSET 24 +#define CCM_PCCR1_WDT_MASK (1 << 24) +#define CCM_PCCR1_HCLK_ATA_OFFSET 23 +#define CCM_PCCR1_HCLK_ATA_MASK (1 << 23) +#define CCM_PCCR1_HCLK_BROM_OFFSET 22 +#define CCM_PCCR1_HCLK_BROM_MASK (1 << 22) +#define CCM_PCCR1_HCLK_CSI_OFFSET 21 +#define CCM_PCCR1_HCLK_CSI_MASK (1 << 21) +#define CCM_PCCR1_HCLK_DMA_OFFSET 20 +#define CCM_PCCR1_HCLK_DMA_MASK (1 << 20) +#define CCM_PCCR1_HCLK_EMI_OFFSET 19 +#define CCM_PCCR1_HCLK_EMI_MASK (1 << 19) +#define CCM_PCCR1_HCLK_EMMA_OFFSET 18 +#define CCM_PCCR1_HCLK_EMMA_MASK (1 << 18) +#define CCM_PCCR1_HCLK_FEC_OFFSET 17 +#define CCM_PCCR1_HCLK_FEC_MASK (1 << 17) +#define CCM_PCCR1_HCLK_VPU_OFFSET 16 +#define CCM_PCCR1_HCLK_VPU_MASK (1 << 16) +#define CCM_PCCR1_HCLK_LCDC_OFFSET 15 +#define CCM_PCCR1_HCLK_LCDC_MASK (1 << 15) +#define CCM_PCCR1_HCLK_RTIC_OFFSET 14 +#define CCM_PCCR1_HCLK_RTIC_MASK (1 << 14) +#define CCM_PCCR1_HCLK_SAHARA_OFFSET 13 +#define CCM_PCCR1_HCLK_SAHARA_MASK (1 << 13) +#define CCM_PCCR1_HCLK_SLCDC_OFFSET 12 +#define CCM_PCCR1_HCLK_SLCDC_MASK (1 << 12) +#define CCM_PCCR1_HCLK_USBOTG_OFFSET 11 +#define CCM_PCCR1_HCLK_USBOTG_MASK (1 << 11) +#define CCM_PCCR1_PERCLK1_OFFSET 10 +#define CCM_PCCR1_PERCLK1_MASK (1 << 10) +#define CCM_PCCR1_PERCLK2_OFFSET 9 +#define CCM_PCCR1_PERCLK2_MASK (1 << 9) +#define CCM_PCCR1_PERCLK3_OFFSET 8 +#define CCM_PCCR1_PERCLK3_MASK (1 << 8) +#define CCM_PCCR1_PERCLK4_OFFSET 7 +#define CCM_PCCR1_PERCLK4_MASK (1 << 7) +#define CCM_PCCR1_VPU_BAUD_OFFSET 6 +#define CCM_PCCR1_VPU_BAUD_MASK (1 << 6) +#define CCM_PCCR1_SSI1_BAUD_OFFSET 5 +#define CCM_PCCR1_SSI1_BAUD_MASK (1 << 5) +#define CCM_PCCR1_SSI2_BAUD_OFFSET 4 +#define CCM_PCCR1_SSI2_BAUD_MASK (1 << 4) +#define CCM_PCCR1_NFC_BAUD_OFFSET 3 +#define CCM_PCCR1_NFC_BAUD_MASK (1 << 3) +#define CCM_PCCR1_MSHC_BAUD_OFFSET 2 +#define CCM_PCCR1_MSHC_BAUD_MASK (1 << 2) + +#define CCM_CCSR_32KSR (1 << 15) +#define CCM_CCSR_CLKMODE1 (1 << 9) +#define CCM_CCSR_CLKMODE0 (1 << 8) +#define CCM_CCSR_CLKOSEL_OFFSET 0 +#define CCM_CCSR_CLKOSEL_MASK 0x1f + +#define SYS_FMCR 0x14 /* Functional Muxing Control Reg */ +#define SYS_CHIP_ID 0x00 /* The offset of CHIP ID register */ + +#endif /* __ARCH_ARM_MACH_MX2_CRM_REGS_H__ */ Index: arch/arm/mach-mx2/dma.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/dma.c @@ -0,0 +1,503 @@ +/* + * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/* + * platform dependend DMA parameter + */ +#include +#include +#include + +#define MXC_SOUND_PLAYBACK_CHAIN_DMA 1 +#define MXC_SOUND_CAPTURE_CHAIN_DMA 1 + +/* the structure stored device_id and dma_info pointer */ +typedef struct dma_info_entry_s { + mxc_dma_device_t device; + /* if there are two dma_info , first is for reading, another is for writing */ + mx2_dma_info_t *info; +} dma_info_entry_t; + +/* dma_info from memory to memory for dma testing */ +static mx2_dma_info_t ram2ram_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_LINEAR,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .M2D_Valid = 0 +}; + +/* dma_info from 2D memory to 2D memory for dma testing */ +static mx2_dma_info_t ram2d2ram2d_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .rto_en = 0, + .dma_chaining = 0,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_2D,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_2D,.destPort = TRANSFER_32BIT, + .M2D_Valid = 1,.msel = 0,.W = 0x80,.X = 0x40,.Y = 0x10 +}; + +/* dma_info from memory to 2D memory for dma testing */ +static mx2_dma_info_t ram2ram2d_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_LINEAR,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_2D,.destPort = TRANSFER_32BIT, + .M2D_Valid = 1,.msel = 0,.W = 0x100,.X = 0x80,.Y = 0x10 +}; + +/* dma_info from 2D memory to memory for dma testing */ +static mx2_dma_info_t ram2d2ram_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_2D,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .M2D_Valid = 1,.msel = 0,.W = 0x100,.X = 0x100,.Y = 0x10 +}; + +/* dma_info with dma chaining feature for dma testing */ +static mx2_dma_info_t hw_chaining_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 1,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_LINEAR,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .M2D_Valid = 0, +}; + +/* dma_info without dma chaining feature for dma testing */ +static mx2_dma_info_t sw_chaining_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 0, + .burstLength = 4,.request = 0,.busuntils = 0, + .sourceType = DMA_TYPE_LINEAR,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .M2D_Valid = 0, +}; + +/* dma_info for ATA recieveing */ +static mx2_dma_info_t ata_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 32,.request = 29,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .per_address = (ATA_BASE_ADDR + 0x18), + .M2D_Valid = 0, +}; + +/* dma_info for ATA transmitting */ +static mx2_dma_info_t ata_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 32,.request = 28,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_32BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_32BIT, + .per_address = (ATA_BASE_ADDR + 0x18), + .M2D_Valid = 0, +}; + +/* dma_info for UART1 recieveing */ +static mx2_dma_info_t uart1_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 1, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 26,.busuntils = 8, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART1_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART1 transmitting */ +static mx2_dma_info_t uart1_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 27,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART1_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +/* dma_info for UART2 recieveing */ +static mx2_dma_info_t uart2_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 24,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART2_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART2 transmitting */ +static mx2_dma_info_t uart2_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 25,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART2_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +/* dma_info for UART3 recieveing */ +static mx2_dma_info_t uart3_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 22,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART3_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART3 transmitting */ +static mx2_dma_info_t uart3_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 23,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART3_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +/* dma_info for UART4 recieveing */ +static mx2_dma_info_t uart4_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 20,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART4_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART4transmitting */ +static mx2_dma_info_t uart4_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 21,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART4_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +/* dma_info for UART5 recieveing */ +static mx2_dma_info_t uart5_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 32,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART5_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART5 transmitting */ +static mx2_dma_info_t uart5_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 33,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART5_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +/* dma_info for UART6 recieveing */ +static mx2_dma_info_t uart6_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 34,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART6_BASE_ADDR), + .M2D_Valid = 0, +}; + +/* dma_info for UART6 transmitting */ +static mx2_dma_info_t uart6_tx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 1,.request = 35,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = TRANSFER_8BIT, + .destType = DMA_TYPE_LINEAR,.destPort = TRANSFER_8BIT, + .per_address = (UART6_BASE_ADDR + 0x40), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t ssi1_16bit_rx0_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = MXC_SOUND_CAPTURE_CHAIN_DMA,.ren = 1, + .burstLength = 8,.request = DMA_REQ_SSI1_RX0,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_16, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SSI1_BASE_ADDR + 0x08), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t ssi1_16bit_tx0_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = MXC_SOUND_PLAYBACK_CHAIN_DMA,.ren = 1, + .burstLength = 8,.request = DMA_REQ_SSI1_TX0,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_16, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SSI1_BASE_ADDR), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t ssi2_16bit_rx0_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = MXC_SOUND_CAPTURE_CHAIN_DMA,.ren = 1, + .burstLength = 8,.request = DMA_REQ_SSI2_RX0,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_16, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SSI2_BASE_ADDR + 0x08), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t ssi2_16bit_tx0_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 1, + .rto_en = 0, + .dir = 0, + .dma_chaining = MXC_SOUND_PLAYBACK_CHAIN_DMA,.ren = 1, + .burstLength = 8,.request = DMA_REQ_SSI2_TX0,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_16, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SSI2_BASE_ADDR), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t mmc1_width1_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 16,.request = DMA_REQ_SDHC1,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_32, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SDHC1_BASE_ADDR + 0x38), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t mmc1_width4_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 0,.request = DMA_REQ_SDHC1,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_32, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SDHC1_BASE_ADDR + 0x38), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t mmc2_width1_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 16,.request = DMA_REQ_SDHC2,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_32, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SDHC2_BASE_ADDR + 0x38), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t mmc2_width4_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 0,.ren = 1, + .burstLength = 0,.request = DMA_REQ_SDHC2,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_32, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (SDHC2_BASE_ADDR + 0x38), + .M2D_Valid = 0, +}; + +static mx2_dma_info_t csi_rx_dma_info = { + .dma_chan = MXC_DMA_DYNAMIC_CHANNEL, + .mode = 0, + .rto_en = 0, + .dir = 0, + .dma_chaining = 1,.ren = 1, + .burstLength = 64,.request = DMA_REQ_CSI_RX,.busuntils = 0, + .sourceType = DMA_TYPE_FIFO,.sourcePort = DMA_MEM_SIZE_32, + .destType = DMA_TYPE_LINEAR,.destPort = DMA_MEM_SIZE_32, + .per_address = (CSI_BASE_ADDR + 0x10), + .M2D_Valid = 0, +}; + +/* + * dma info array which is actived + * DEVICE_ID RX/(RX&TX) TX + */ +static dma_info_entry_t active_dma_info[] = { + {MXC_DMA_TEST_RAM2RAM, &ram2ram_dma_info}, + {MXC_DMA_TEST_RAM2D2RAM2D, &ram2d2ram2d_dma_info}, + {MXC_DMA_TEST_RAM2RAM2D, &ram2ram2d_dma_info}, + {MXC_DMA_TEST_RAM2D2RAM, &ram2d2ram_dma_info}, + {MXC_DMA_TEST_HW_CHAINING, &hw_chaining_dma_info}, + {MXC_DMA_TEST_SW_CHAINING, &sw_chaining_dma_info}, + {MXC_DMA_ATA_RX, &ata_rx_dma_info}, + {MXC_DMA_ATA_TX, &ata_tx_dma_info}, + {MXC_DMA_UART1_RX, &uart1_rx_dma_info}, + {MXC_DMA_UART1_TX, &uart1_tx_dma_info}, + {MXC_DMA_UART2_RX, &uart2_rx_dma_info}, + {MXC_DMA_UART2_TX, &uart2_tx_dma_info}, + {MXC_DMA_UART3_RX, &uart3_rx_dma_info}, + {MXC_DMA_UART3_TX, &uart3_tx_dma_info}, + {MXC_DMA_UART4_RX, &uart4_rx_dma_info}, + {MXC_DMA_UART4_TX, &uart4_tx_dma_info}, + {MXC_DMA_UART5_RX, &uart5_rx_dma_info}, + {MXC_DMA_UART5_TX, &uart5_tx_dma_info}, + {MXC_DMA_UART6_RX, &uart6_rx_dma_info}, + {MXC_DMA_UART6_TX, &uart6_tx_dma_info}, + {MXC_DMA_SSI1_16BIT_RX0, &ssi1_16bit_rx0_dma_info}, + {MXC_DMA_SSI1_16BIT_TX0, &ssi1_16bit_tx0_dma_info}, + {MXC_DMA_SSI2_16BIT_RX0, &ssi2_16bit_rx0_dma_info}, + {MXC_DMA_SSI2_16BIT_TX0, &ssi2_16bit_tx0_dma_info}, + {MXC_DMA_MMC1_WIDTH_1, &mmc1_width1_dma_info}, + {MXC_DMA_MMC1_WIDTH_4, &mmc1_width4_dma_info}, + {MXC_DMA_MMC2_WIDTH_1, &mmc2_width1_dma_info}, + {MXC_DMA_MMC2_WIDTH_4, &mmc2_width4_dma_info}, + {MXC_DMA_CSI_RX, &csi_rx_dma_info}, +}; + +/* get the dma info by channel_id */ +mx2_dma_info_t *mxc_dma_get_info(mxc_dma_device_t channel_id) +{ + dma_info_entry_t *p = active_dma_info; + int i; + for (i = 0; i < ARRAY_SIZE(active_dma_info); i++, p++) { + if (p->device == channel_id) + return p->info; + } + return NULL; +} +EXPORT_SYMBOL(mxc_dma_get_info); + +/* scan dma parameter list . And collect information about which + * channels are dynamic */ +void mxc_dma_load_info(mxc_dma_channel_t * dma) +{ + int i, idx; + dma_info_entry_t *p = active_dma_info; + + BUG_ON(dma == NULL); + BUG_ON(p == NULL); + + for (i = 0; i < MXC_DMA_CHANNELS; i++) { + dma[i].dynamic = 1; + } + + for (i = 0; i < ARRAY_SIZE(active_dma_info); i++, p++) { + BUG_ON((p->info == NULL)); + + idx = p->info->dma_chan; + + BUG_ON(((idx >= MAX_DMA_CHANNELS) + && (idx != MXC_DMA_DYNAMIC_CHANNEL))); + if ((idx < 0) || (idx == MXC_DMA_DYNAMIC_CHANNEL)) + continue; + dma[idx].dynamic = 0; + } +} +EXPORT_SYMBOL(mxc_dma_load_info); Index: arch/arm/mach-mx2/Kconfig =================================================================== --- /dev/null +++ arch/arm/mach-mx2/Kconfig @@ -0,0 +1,11 @@ +comment "MX2 family CPU support" + depends on ARCH_MX2 + +config MACH_MX27 + bool "i.MX27 support" + depends on ARCH_MX2 + help + This enables support for Freescale's MX2 based i.MX27 processor. + +comment "MX2 Platforms" + depends on ARCH_MX2 Index: arch/arm/mach-mx2/Makefile =================================================================== --- /dev/null +++ arch/arm/mach-mx2/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for the linux kernel. +# + +# Object file lists. + +obj-y := dma.o gpio_mux.o clock.o devices.o serial.o system.o generic.o + +obj-$(CONFIG_MACH_MX27) += cpu_imx27.o Index: arch/arm/mach-mx2/Makefile.boot =================================================================== --- /dev/null +++ arch/arm/mach-mx2/Makefile.boot @@ -0,0 +1,3 @@ + zreladdr-y := 0xA0008000 +params_phys-y := 0xA0000100 +initrd_phys-y := 0xA0800000 Index: arch/arm/mach-mx2/system.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/system.c @@ -0,0 +1,62 @@ +/* + * Copyright (C) 1999 ARM Limited + * Copyright (C) 2000 Deep Blue Solutions Ltd + * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +/* + * Put the CPU into idle mode. It is called by default_idle() + * in process.c file. + */ +void arch_idle(void) +{ + /* + * This should do all the clock switching + * and wait for interrupt tricks. + */ + cpu_do_idle(); +} + +#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR) +#define WDOG_WCR_SRS (1 << 4) + +/* + * Reset the system. It is called by machine_restart(). + */ +void arch_reset(char mode) +{ + struct clk *clk; + + clk = clk_get(NULL, "wdog_clk"); + if (!clk) { + printk("Cannot activate the watchdog. Giving up\n"); + return; + } + + clk_enable(clk); + + /* Assert SRS signal */ + __raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG); +} Index: arch/arm/mach-mx2/serial.h =================================================================== --- /dev/null +++ arch/arm/mach-mx2/serial.h @@ -0,0 +1,170 @@ +/* + * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __ARCH_ARM_MACH_MX2_SERIAL_H__ +#define __ARCH_ARM_MACH_MX2_SERIAL_H__ + +#include + +/* + * This option allows to choose either an interrupt-driven software controlled + * hardware flow control (set this option to 0) or hardware-driven hardware + * flow control (set this option to 1). + */ +#define UART1_HW_FLOW 1 +/* + * This specifies the threshold at which the CTS pin is deasserted by the + * RXFIFO. Set this value in Decimal to anything from 0 to 32 for + * hardware-driven hardware flow control. Read the HW spec while specifying + * this value. When using interrupt-driven software controlled hardware + * flow control set this option to -1. + */ +#define UART1_UCR4_CTSTL 16 +/* + * This is option to enable (set this option to 1) or disable DMA data transfer + */ +#define UART1_DMA_ENABLE 0 +/* + * Specify the size of the DMA receive buffer. The buffer size should be same with + * sub buffer size which is defined in mxc_uart.c for all data can be transfered. + */ +#define UART1_DMA_RXBUFSIZE 128 +/* + * Specify the MXC UART's Receive Trigger Level. This controls the threshold at + * which a maskable interrupt is generated by the RxFIFO. Set this value in + * Decimal to anything from 0 to 32. Read the HW spec while specifying this + * value. + */ +#define UART1_UFCR_RXTL 16 +/* + * Specify the MXC UART's Transmit Trigger Level. This controls the threshold at + * which a maskable interrupt is generated by the TxFIFO. Set this value in + * Decimal to anything from 0 to 32. Read the HW spec while specifying this + * value. + */ +#define UART1_UFCR_TXTL 16 +/* UART 2 configuration */ +#define UART2_HW_FLOW 1 +#define UART2_UCR4_CTSTL 16 +#define UART2_DMA_ENABLE 0 +#define UART2_DMA_RXBUFSIZE 512 +#define UART2_UFCR_RXTL 16 +#define UART2_UFCR_TXTL 16 +/* UART 3 configuration */ +#define UART3_HW_FLOW 0 +#define UART3_UCR4_CTSTL -1 +#define UART3_DMA_ENABLE 0 +#define UART3_DMA_RXBUFSIZE 512 +#define UART3_UFCR_RXTL 16 +#define UART3_UFCR_TXTL 16 +/* UART 4 configuration */ +#define UART4_HW_FLOW 1 +#define UART4_UCR4_CTSTL 16 +#define UART4_DMA_ENABLE 0 +#define UART4_DMA_RXBUFSIZE 512 +#define UART4_UFCR_RXTL 16 +#define UART4_UFCR_TXTL 16 +/* UART 5 configuration */ +#define UART5_HW_FLOW 1 +#define UART5_UCR4_CTSTL 16 +#define UART5_DMA_ENABLE 0 +#define UART5_DMA_RXBUFSIZE 512 +#define UART5_UFCR_RXTL 16 +#define UART5_UFCR_TXTL 16 +/* UART 6 configuration */ +#define UART6_HW_FLOW 1 +#define UART6_UCR4_CTSTL 16 +#define UART6_DMA_ENABLE 0 +#define UART6_DMA_RXBUFSIZE 512 +#define UART6_UFCR_RXTL 16 +#define UART6_UFCR_TXTL 16 +/* + * UART Chip level Configuration that a user may not have to edit. These + * configuration vary depending on how the UART module is integrated with + * the ARM core + */ +/* + * Is the MUXED interrupt output sent to the ARM core + */ +#define INTS_NOTMUXED 0 +#define INTS_MUXED 1 + +/* UART 1 configuration */ +/* + * This define specifies whether the muxed ANDed interrupt line or the + * individual interrupts from the UART port is integrated with the ARM core. + * There exists a define like this for each UART port. Valid values that can + * be used are \b INTS_NOTMUXED or \b INTS_MUXED. + */ +#define UART1_MUX_INTS INTS_MUXED +/* + * This define specifies the transmitter interrupt number or the interrupt + * number of the ANDed interrupt in case the interrupts are muxed. There exists + * a define like this for each UART port. + */ +#define UART1_INT1 INT_UART1 +/* + * This define specifies the receiver interrupt number. If the interrupts of + * the UART are muxed, then we specify here a dummy value -1. There exists a + * define like this for each UART port. + */ +#define UART1_INT2 -1 +/* + * This specifies the master interrupt number. If the interrupts of the UART + * are muxed, then we specify here a dummy value of -1. There exists a define + * like this for each UART port. + */ +#define UART1_INT3 -1 +/* + * This specifies if the UART is a shared peripheral. It holds the shared + * peripheral number if it is shared or -1 if it is not shared. There exists + * a define like this for each UART port. + */ +#define UART1_SHARED_PERI -1 +/* UART 2 configuration */ +#define UART2_MUX_INTS INTS_MUXED +#define UART2_INT1 INT_UART2 +#define UART2_INT2 -1 +#define UART2_INT3 -1 +#define UART2_SHARED_PERI -1 +/* UART 3 configuration */ +#define UART3_MUX_INTS INTS_MUXED +#define UART3_INT1 INT_UART3 +#define UART3_INT2 -1 +#define UART3_INT3 -1 +#define UART3_SHARED_PERI -1 +/* UART 4 configuration */ +#define UART4_MUX_INTS INTS_MUXED +#define UART4_INT1 INT_UART4 +#define UART4_INT2 -1 +#define UART4_INT3 -1 +#define UART4_SHARED_PERI -1 +/* UART 5 configuration */ +#define UART5_MUX_INTS INTS_MUXED +#define UART5_INT1 INT_UART5 +#define UART5_INT2 -1 +#define UART5_INT3 -1 +#define UART5_SHARED_PERI -1 +/* UART 6 configuration */ +#define UART6_MUX_INTS INTS_MUXED +#define UART6_INT1 INT_UART6 +#define UART6_INT2 -1 +#define UART6_INT3 -1 +#define UART6_SHARED_PERI -1 + +#endif /* __ARCH_ARM_MACH_MX2_SERIAL_H__ */ Index: arch/arm/mach-mx2/serial.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/serial.c @@ -0,0 +1,308 @@ +/* + * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2008 Juergen Beisert, kernel@pengutronix.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#include "serial.h" +#include "devices.h" + +/* + * This is an array where each element holds information about a UART port, + * like base address of the UART, interrupt numbers etc. This structure is + * passed to the serial_core.c file. Based on which UART is used, the core file + * passes back the appropriate port structure as an argument to the control + * functions. + */ +static struct uart_mxc_port mxc_ports[6] = { + [0] = { + .port = { + .membase = (void *)IO_ADDRESS(UART1_BASE_ADDR), + .mapbase = UART1_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART1_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 0, + }, + .ints_muxed = UART1_MUX_INTS, + .irqs = {UART1_INT2, UART1_INT3}, + .hardware_flow = UART1_HW_FLOW, + .cts_threshold = UART1_UCR4_CTSTL, + .dma_enabled = UART1_DMA_ENABLE, + .dma_rxbuf_size = UART1_DMA_RXBUFSIZE, + .rx_threshold = UART1_UFCR_RXTL, + .tx_threshold = UART1_UFCR_TXTL, + .shared = UART1_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART1_TX, + .dma_rx_id = MXC_DMA_UART1_RX, + .rxd_mux = MXC_UART_RXDMUX, + }, + [1] = { + .port = { + .membase = (void *)IO_ADDRESS(UART2_BASE_ADDR), + .mapbase = UART2_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART2_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 1, + }, + .ints_muxed = UART2_MUX_INTS, + .irqs = {UART2_INT2, UART2_INT3}, + .hardware_flow = UART2_HW_FLOW, + .cts_threshold = UART2_UCR4_CTSTL, + .dma_enabled = UART2_DMA_ENABLE, + .dma_rxbuf_size = UART2_DMA_RXBUFSIZE, + .rx_threshold = UART2_UFCR_RXTL, + .tx_threshold = UART2_UFCR_TXTL, + .shared = UART2_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART2_TX, + .dma_rx_id = MXC_DMA_UART2_RX, + .rxd_mux = MXC_UART_RXDMUX, + }, + [2] = { + .port = { + .membase = (void *)IO_ADDRESS(UART3_BASE_ADDR), + .mapbase = UART3_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART3_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 2, + }, + .ints_muxed = UART3_MUX_INTS, + .irqs = {UART3_INT2, UART3_INT3}, + .hardware_flow = UART3_HW_FLOW, + .cts_threshold = UART3_UCR4_CTSTL, + .dma_enabled = UART3_DMA_ENABLE, + .dma_rxbuf_size = UART3_DMA_RXBUFSIZE, + .rx_threshold = UART3_UFCR_RXTL, + .tx_threshold = UART3_UFCR_TXTL, + .shared = UART3_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART3_TX, + .dma_rx_id = MXC_DMA_UART3_RX, + .rxd_mux = MXC_UART_IR_RXDMUX, + }, + [3] = { + .port = { + .membase = (void *)IO_ADDRESS(UART4_BASE_ADDR), + .mapbase = UART4_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART4_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 3, + }, + .ints_muxed = UART4_MUX_INTS, + .irqs = {UART4_INT2, UART4_INT3}, + .hardware_flow = UART4_HW_FLOW, + .cts_threshold = UART4_UCR4_CTSTL, + .dma_enabled = UART4_DMA_ENABLE, + .dma_rxbuf_size = UART4_DMA_RXBUFSIZE, + .rx_threshold = UART4_UFCR_RXTL, + .tx_threshold = UART4_UFCR_TXTL, + .shared = UART4_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART4_TX, + .dma_rx_id = MXC_DMA_UART4_RX, + .rxd_mux = MXC_UART_RXDMUX, + }, + [4] = { + .port = { + .membase = (void *)IO_ADDRESS(UART5_BASE_ADDR), + .mapbase = UART5_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART5_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 4, + }, + .ints_muxed = UART5_MUX_INTS, + .irqs = {UART5_INT2, UART5_INT3}, + .hardware_flow = UART5_HW_FLOW, + .cts_threshold = UART5_UCR4_CTSTL, + .dma_enabled = UART5_DMA_ENABLE, + .dma_rxbuf_size = UART5_DMA_RXBUFSIZE, + .rx_threshold = UART5_UFCR_RXTL, + .tx_threshold = UART5_UFCR_TXTL, + .shared = UART5_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART5_TX, + .dma_rx_id = MXC_DMA_UART5_RX, + .rxd_mux = MXC_UART_RXDMUX, + }, + [5] = { + .port = { + .membase = (void *)IO_ADDRESS(UART6_BASE_ADDR), + .mapbase = UART6_BASE_ADDR, + .iotype = SERIAL_IO_MEM, + .irq = UART6_INT1, + .fifosize = 32, + .flags = ASYNC_BOOT_AUTOCONF, + .line = 5, + }, + .ints_muxed = UART6_MUX_INTS, + .irqs = {UART6_INT2, UART6_INT3}, + .hardware_flow = UART6_HW_FLOW, + .cts_threshold = UART6_UCR4_CTSTL, + .dma_enabled = UART6_DMA_ENABLE, + .dma_rxbuf_size = UART6_DMA_RXBUFSIZE, + .rx_threshold = UART6_UFCR_RXTL, + .tx_threshold = UART6_UFCR_TXTL, + .shared = UART6_SHARED_PERI, + .dma_tx_id = MXC_DMA_UART6_TX, + .dma_rx_id = MXC_DMA_UART6_RX, + .rxd_mux = MXC_UART_RXDMUX, + }, +}; + +static struct resource uart0 = { + .start = UART1_BASE_ADDR, + .end = UART1_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device0 = { + .name = "mxcintuart", + .id = 0, + .resource = &uart0, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[0], + }, +}; + +static struct resource uart1 = { + .start = UART2_BASE_ADDR, + .end = UART2_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device1 = { + .name = "mxcintuart", + .id = 1, + .resource = &uart1, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[1], + }, +}; + +static struct resource uart2 = { + .start = UART3_BASE_ADDR, + .end = UART3_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device2 = { + .name = "mxcintuart", + .id = 2, + .resource = &uart2, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[2], + }, +}; + +static struct resource uart3 = { + .start = UART4_BASE_ADDR, + .end = UART4_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device3 = { + .name = "mxcintuart", + .id = 3, + .resource = &uart3, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[3], + }, +}; + +static struct resource uart4 = { + .start = UART5_BASE_ADDR, + .end = UART5_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device4 = { + .name = "mxcintuart", + .id = 4, + .resource = &uart4, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[4], + }, +}; + +static struct resource uart5 = { + .start = UART6_BASE_ADDR, + .end = UART6_BASE_ADDR + 0x0B5, + .flags = IORESOURCE_MEM +}; + +static struct platform_device mxc_uart_device5 = { + .name = "mxcintuart", + .id = 5, + .resource = &uart5, + .num_resources = 1, + .dev = { + .platform_data = &mxc_ports[5], + }, +}; + +/* + * Register only those UARTs that physically exists + */ +int __init mxc_init_uart(int uart_no, unsigned int flags, + int (*init)(struct platform_device *pdev), + int (*exit)(struct platform_device *pdev)) +{ + mxc_ports[uart_no].flags = flags; + mxc_ports[uart_no].init = init; + mxc_ports[uart_no].exit = exit; + + switch (uart_no) { + case 0: + platform_device_register(&mxc_uart_device0); + break; + case 1: + platform_device_register(&mxc_uart_device1); + break; +#ifndef CONFIG_MXC_IRDA + case 2: + platform_device_register(&mxc_uart_device2); + break; +#endif + case 3: + platform_device_register(&mxc_uart_device3); + break; + case 4: + platform_device_register(&mxc_uart_device4); + break; + case 5: + platform_device_register(&mxc_uart_device5); + break; + default: + return -ENODEV; + } + + return 0; +} Index: arch/arm/plat-mxc/Kconfig =================================================================== --- arch/arm/plat-mxc/Kconfig.orig +++ arch/arm/plat-mxc/Kconfig @@ -18,6 +18,7 @@ config ARCH_MX3 endchoice +source "arch/arm/mach-mx2/Kconfig" source "arch/arm/mach-mx3/Kconfig" endmenu Index: include/asm-arm/arch-mxc/hardware.h =================================================================== --- include/asm-arm/arch-mxc/hardware.h.orig +++ include/asm-arm/arch-mxc/hardware.h @@ -26,6 +26,9 @@ #endif #ifdef CONFIG_ARCH_MX2 +# ifdef CONFIG_MACH_MX27 +# include +# endif #endif #include Index: arch/arm/mach-mx2/generic.c =================================================================== --- /dev/null +++ arch/arm/mach-mx2/generic.c @@ -0,0 +1,74 @@ +/* + * generic.c + * + * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include +#include +#include +#include +#include + +/* MX27 memory map definition */ +static struct map_desc mxc_io_desc[] __initdata = { + /* + * this fixed mapping covers: + * - AIPI1 + * - AIPI2 + * - AITC + * - ROM Patch + * - and some reserved space + */ + { + .virtual = AIPI_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(AIPI_BASE_ADDR), + .length = AIPI_SIZE, + .type = MT_DEVICE + }, + /* + * this fixed mapping covers: + * - CSI + * - ATA + */ + { + .virtual = SAHB1_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(SAHB1_BASE_ADDR), + .length = SAHB1_SIZE, + .type = MT_DEVICE + }, + /* + * this fixed mapping covers: + * - EMI + */ + { + .virtual = X_MEMC_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR), + .length = X_MEMC_SIZE, + .type = MT_DEVICE + } +}; + +/* + * Initialize the memory map. It is called during the + * system startup to create static physical to virtual + * memory map for the IO modules. + */ +void __init imx_map_io(void) +{ + iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc)); + +} Index: include/asm-arm/arch-mxc/mxc.h =================================================================== --- include/asm-arm/arch-mxc/mxc.h.orig +++ include/asm-arm/arch-mxc/mxc.h @@ -29,6 +29,9 @@ #endif #ifdef CONFIG_ARCH_MX2 +# ifndef CONFIG_MACH_MX27 +# define cpu_is_mx27() (0) +# endif #endif /*