Subject: mx27: add pcm970 evaluation board From: Juergen Beisert The Phytec phyCORE-i.MX27 CPU module is delivered with the PCM970 baseboard by default. This patch adds support for the hardware. This code is only an empty stub; it is filled up with functionality in a later patch series. Signed-off-by: Juergen Beisert --- arch/arm/mach-mx2/Kconfig | 14 +++++++++++++ arch/arm/mach-mx2/Makefile | 1 arch/arm/mach-mx2/pcm038.c | 18 ++++++++++++++++- arch/arm/mach-mx2/pcm970-baseboard.c | 33 ++++++++++++++++++++++++++++++++ include/asm-arm/arch-mxc/board-pcm038.h | 18 +++++++++++------ 5 files changed, 77 insertions(+), 7 deletions(-) Index: linux-2.6.26-rc6/arch/arm/mach-mx2/pcm970-baseboard.c =================================================================== --- /dev/null +++ linux-2.6.26-rc6/arch/arm/mach-mx2/pcm970-baseboard.c @@ -0,0 +1,33 @@ +/* + * 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 "devices.h" + +/* + * system init for baseboard usage. Will be called by pcm038 init. + * + * Add platform devices present on this baseboard and init + * them from CPU side as far as required to use them later on + */ +void __init pcm970_baseboard_init(void) +{ +} Index: linux-2.6.26-rc6/arch/arm/mach-mx2/Kconfig =================================================================== --- linux-2.6.26-rc6.orig/arch/arm/mach-mx2/Kconfig +++ linux-2.6.26-rc6/arch/arm/mach-mx2/Kconfig @@ -23,3 +23,17 @@ config MACH_PCM038 help Include support for phyCORE-i.MX27 (aka pcm038) platform. This includes specific configurations for the module and its peripherals. + +choice + prompt "Baseboard" + depends on MACH_PCM038 + default MACH_PCM970_BASEBOARD + +config MACH_PCM970_BASEBOARD + prompt "PHYTEC PCM970 development board" + bool + help + This adds board specific devices that can be found on Phytec's + PCM970 evaluation board. + +endchoice Index: linux-2.6.26-rc6/arch/arm/mach-mx2/Makefile =================================================================== --- linux-2.6.26-rc6.orig/arch/arm/mach-mx2/Makefile +++ linux-2.6.26-rc6/arch/arm/mach-mx2/Makefile @@ -11,3 +11,4 @@ obj-$(CONFIG_MACH_MX27) += clock_imx27.o obj-$(CONFIG_MACH_MX27ADS) += mx27ads.o obj-$(CONFIG_MACH_PCM038) += pcm038.o +obj-$(CONFIG_MACH_PCM970_BASEBOARD) += pcm970-baseboard.o Index: linux-2.6.26-rc6/include/asm-arm/arch-mxc/board-pcm038.h =================================================================== --- linux-2.6.26-rc6.orig/include/asm-arm/arch-mxc/board-pcm038.h +++ linux-2.6.26-rc6/include/asm-arm/arch-mxc/board-pcm038.h @@ -19,12 +19,6 @@ #ifndef __ASM_ARCH_MXC_BOARD_PCM038_H__ #define __ASM_ARCH_MXC_BOARD_PCM038_H__ -/* Start of physical RAM */ -#define PHYS_OFFSET UL(0xA0000000) - -/* Size of contiguous memory for DMA and other h/w blocks */ -#define CONSISTENT_DMA_SIZE SZ_8M - /* this CPU supports two I2C channel. Define the one, that controls the on board devices EEPROM, RTC and temparature sensor */ #define PCM038_I2C_BUS 1 @@ -42,4 +36,16 @@ */ #define SDRAM_MEM_SIZE SZ_128M +#ifndef __ASSEMBLY__ +/* + * This CPU module needs a baseboard to work. After basic initializing + * its own devices, it calls baseboard's init function. + * TODO: Add your own basebaord init function and call it from + * inside pcm038_init(). This example here is for the development board. + * Refer pcm970-baseboard.c + */ +extern void pcm970_baseboard_init(void); + +#endif + #endif /* __ASM_ARCH_MXC_BOARD_PCM038_H__ */ Index: linux-2.6.26-rc6/arch/arm/mach-mx2/pcm038.c =================================================================== --- linux-2.6.26-rc6.orig/arch/arm/mach-mx2/pcm038.c +++ linux-2.6.26-rc6/arch/arm/mach-mx2/pcm038.c @@ -31,9 +31,11 @@ #include #include #include +#include #include #include #include +#include #include "devices.h" @@ -188,8 +190,22 @@ static void __init pcm038_init(void) imx_init_uart(i, &uart_pdata[i]); platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); + +#ifdef CONFIG_MACH_PCM970_BASEBOARD + pcm970_baseboard_init(); +#endif +} + +static void __init pcm038_timer_init(void) +{ + mxc_clocks_init(26000000); + mxc_timer_init("gpt_clk.0"); } +struct sys_timer pcm038_timer = { + .init = pcm038_timer_init, +}; + MACHINE_START(PCM038, "phyCORE-i.MX27") .phys_io = AIPI_BASE_ADDR, .io_pg_offst = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc, @@ -197,5 +213,5 @@ MACHINE_START(PCM038, "phyCORE-i.MX27") .map_io = mxc_map_io, .init_irq = mxc_init_irq, .init_machine = pcm038_init, - .timer = &mxc_timer, + .timer = &pcm038_timer, MACHINE_END