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Commit 72d0f1c3 authored by Syed Mohammed Khasim's avatar Syed Mohammed Khasim Committed by Tony Lindgren
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ARM: OMAP: Add minimal OMAP2430 support 



This patch adds minimal OMAP2430 support to get the kernel booting on 2430SDP.

Signed-off-by: default avatarSyed Mohammed Khasim <x0khasim@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent f6049312

arch/arm/mach-omap2/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -11,6 +11,10 @@ config ARCH_OMAP2420 
	select OMAP_DM_TIMER

	select ARCH_OMAP_OTG



config ARCH_OMAP2430

	bool "OMAP2430 support"

	depends on ARCH_OMAP24XX



comment "OMAP Board Type"

	depends on ARCH_OMAP2
@@ -26,3 +30,8 @@ config MACH_OMAP_H4 
config MACH_OMAP_APOLLON

	bool "OMAP 2420 Apollon board"

	depends on ARCH_OMAP2 && ARCH_OMAP24XX



config MACH_OMAP_2430SDP

	bool "OMAP 2430 SDP board"

	depends on ARCH_OMAP2 && ARCH_OMAP24XX

arch/arm/mach-omap2/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -14,5 +14,6 @@ obj-$(CONFIG_PM) += pm.o pm-domain.o sleep.o 
# Specific board support

obj-$(CONFIG_MACH_OMAP_GENERIC)		+= board-generic.o

obj-$(CONFIG_MACH_OMAP_H4)		+= board-h4.o

obj-$(CONFIG_MACH_OMAP_2430SDP)		+= board-2430sdp.o

obj-$(CONFIG_MACH_OMAP_APOLLON)		+= board-apollon.o

arch/arm/mach-omap2/board-2430sdp.c

0 → 100644
+218 −0
Original line number Diff line number Diff line 
/*

 * linux/arch/arm/mach-omap2/board-2430sdp.c

 *

 * Copyright (C) 2006 Texas Instruments

 *

 * Modified from mach-omap2/board-generic.c

 *

 * Initial Code : Based on a patch from Komal Shah and Richard Woodruff

 * Updated the Code for 2430 SDP : Syed Mohammed Khasim

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/partitions.h>

#include <linux/delay.h>

#include <linux/err.h>

#include <linux/clk.h>



#include <asm/hardware.h>

#include <asm/mach-types.h>

#include <asm/mach/arch.h>

#include <asm/mach/map.h>

#include <asm/mach/flash.h>



#include <asm/arch/gpio.h>

#include <asm/arch/mux.h>

#include <asm/arch/board.h>

#include <asm/arch/common.h>

#include <asm/arch/gpmc.h>

#include "prcm-regs.h"



#include <asm/io.h>





#define	SDP2430_FLASH_CS	0

#define	SDP2430_SMC91X_CS	5



static struct mtd_partition sdp2430_partitions[] = {

	/* bootloader (U-Boot, etc) in first sector */

	{

		.name		= "bootloader",

		.offset		= 0,

		.size		= SZ_256K,

		.mask_flags	= MTD_WRITEABLE,	/* force read-only */

	 },

	/* bootloader params in the next sector */

	{

		.name		= "params",

		.offset		= MTDPART_OFS_APPEND,

		.size		= SZ_128K,

		.mask_flags	= 0,

	 },

	/* kernel */

	{

		.name		= "kernel",

		.offset		= MTDPART_OFS_APPEND,

		.size		= SZ_2M,

		.mask_flags	= 0

	},

	/* file system */

	{

		.name		= "filesystem",

		.offset		= MTDPART_OFS_APPEND,

		.size		= MTDPART_SIZ_FULL,

		.mask_flags	= 0

	}

};



static struct flash_platform_data sdp2430_flash_data = {

	.map_name	= "cfi_probe",

	.width		= 2,

	.parts		= sdp2430_partitions,

	.nr_parts	= ARRAY_SIZE(sdp2430_partitions),

};



static struct resource sdp2430_flash_resource = {

	.start		= SDP2430_CS0_BASE,

	.end		= SDP2430_CS0_BASE + SZ_64M - 1,

	.flags		= IORESOURCE_MEM,

};



static struct platform_device sdp2430_flash_device = {

	.name		= "omapflash",

	.id		= 0,

	.dev = {

		.platform_data	= &sdp2430_flash_data,

	},

	.num_resources	= 1,

	.resource	= &sdp2430_flash_resource,

};



static struct resource sdp2430_smc91x_resources[] = {

	[0] = {

		.start	= SDP2430_CS0_BASE,

		.end	= SDP2430_CS0_BASE + SZ_64M - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),

		.end	= OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device sdp2430_smc91x_device = {

	.name		= "smc91x",

	.id		= -1,

	.num_resources	= ARRAY_SIZE(sdp2430_smc91x_resources),

	.resource	= sdp2430_smc91x_resources,

};



static struct platform_device *sdp2430_devices[] __initdata = {

	&sdp2430_smc91x_device,

	&sdp2430_flash_device,

};



static inline void __init sdp2430_init_smc91x(void)

{

	int eth_cs;

	unsigned long cs_mem_base;

	unsigned int rate;

	struct clk *l3ck;



	eth_cs = SDP2430_SMC91X_CS;



	l3ck = clk_get(NULL, "core_l3_ck");

	if (IS_ERR(l3ck))

		rate = 100000000;

	else

		rate = clk_get_rate(l3ck);



	/* Make sure CS1 timings are correct, for 2430 always muxed */

	gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);



	if (rate >= 160000000) {

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);

	} else if (rate >= 130000000) {

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);

	} else { /* rate = 100000000 */

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);

		gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);

	}



	if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {

		printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");

		return;

	}



	sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;

	sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;

	udelay(100);



	if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {

		printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",

			OMAP24XX_ETHR_GPIO_IRQ);

		gpmc_cs_free(eth_cs);

		return;

	}

	omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);



}



static void __init omap_2430sdp_init_irq(void)

{

	omap2_init_common_hw();

	omap_init_irq();

	omap_gpio_init();

	sdp2430_init_smc91x();

}



static struct omap_uart_config sdp2430_uart_config __initdata = {

	.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),

};



static struct omap_board_config_kernel sdp2430_config[] = {

	{OMAP_TAG_UART, &sdp2430_uart_config},

};



static void __init omap_2430sdp_init(void)

{

	platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));

	omap_board_config = sdp2430_config;

	omap_board_config_size = ARRAY_SIZE(sdp2430_config);

	omap_serial_init();

}



static void __init omap_2430sdp_map_io(void)

{

	omap2_map_common_io();

}



MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")

	/* Maintainer: Syed Khasim - Texas Instruments Inc */

	.phys_io	= 0x48000000,

	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,

	.boot_params	= 0x80000100,

	.map_io		= omap_2430sdp_map_io,

	.init_irq	= omap_2430sdp_init_irq,

	.init_machine	= omap_2430sdp_init,

	.timer		= &omap_timer,

MACHINE_END

arch/arm/mach-omap2/devices.c

+4 −2
Original line number Diff line number Diff line
@@ -55,8 +55,10 @@ static void omap_init_i2c(void) 
	if (machine_is_omap_h4())

		return;



	if (!cpu_is_omap2430()) {

		omap_cfg_reg(J15_24XX_I2C2_SCL);

		omap_cfg_reg(H19_24XX_I2C2_SDA);

	}

	(void) platform_device_register(&omap_i2c_device2);

}

arch/arm/mach-omap2/gpmc.c

+7 −0
Original line number Diff line number Diff line
@@ -22,7 +22,14 @@ 


#undef DEBUG



#ifdef CONFIG_ARCH_OMAP2420

#define GPMC_BASE		0x6800a000

#endif



#ifdef CONFIG_ARCH_OMAP2430

#define GPMC_BASE		0x6E000000

#endif



#define GPMC_REVISION		0x00

#define GPMC_SYSCONFIG		0x10

#define GPMC_SYSSTATUS		0x14