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ux500: Add eMMC support in U5500. 

U5500 now boots from sdi0 (onboard eMMC).
Change machine type to U5500.
Adjust uart and sdi0 clock rates for u5500.
All necessary clocks must be enabled before Linux starts because
there is no clock tree support in u5500 yet.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
This commit is contained in:
Per Forlin 2010-12-05 12:49:03 +01:00 committed by Linus Walleij
parent 9b04f8b907
commit bab263e0ce
5 changed files with 57 additions and 2 deletions
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2
arch/arm/mach-ux500/Makefile
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@ -6,7 +6,7 @@ obj-y := clock.o cpu.o devices.o devices-common.o
obj-$(CONFIG_UX500_SOC_DB5500) += cpu-db5500.o devices-db5500.o
obj-$(CONFIG_UX500_SOC_DB8500) += cpu-db8500.o devices-db8500.o prcmu.o
obj-$(CONFIG_MACH_U8500_MOP) += board-mop500.o board-mop500-sdi.o
obj-$(CONFIG_MACH_U5500) += board-u5500.o
obj-$(CONFIG_MACH_U5500) += board-u5500.o board-u5500-sdi.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o

49
arch/arm/mach-ux500/board-u5500-sdi.c Normal file
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@ -0,0 +1,49 @@
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Hanumath Prasad <ulf.hansson@stericsson.com>
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/amba/mmci.h>
#include <linux/mmc/host.h>
#include <linux/gpio.h>
#include <plat/pincfg.h>
#include <mach/db5500-regs.h>
#include <plat/ste_dma40.h>
#include "pins-db5500.h"
#include "devices-db5500.h"
#include "ste-dma40-db5500.h"
static pin_cfg_t u5500_sdi_pins[] = {
/* SDI0 (POP eMMC) */
GPIO5_MC0_DAT0 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO6_MC0_DAT1 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO7_MC0_DAT2 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO8_MC0_DAT3 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO9_MC0_DAT4 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO10_MC0_DAT5 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO11_MC0_DAT6 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO12_MC0_DAT7 | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO13_MC0_CMD | PIN_DIR_INPUT | PIN_PULL_UP,
GPIO14_MC0_CLK | PIN_DIR_OUTPUT | PIN_VAL_LOW,
};
static struct mmci_platform_data u5500_sdi0_data = {
.ocr_mask = MMC_VDD_165_195,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA |
MMC_CAP_8_BIT_DATA |
MMC_CAP_MMC_HIGHSPEED,
.gpio_cd = -1,
.gpio_wp = -1,
};
void __init u5500_sdi_init(void)
{
nmk_config_pins(u5500_sdi_pins, ARRAY_SIZE(u5500_sdi_pins));
db5500_add_sdi0(&u5500_sdi0_data);
}

3
arch/arm/mach-ux500/board-u5500.c
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@ -31,10 +31,11 @@ static void __init u5500_init_machine(void)
{
u5500_init_devices();
u5500_sdi_init();
u5500_uart_init();
}
MACHINE_START(U8500, "ST-Ericsson U5500 Platform")
MACHINE_START(U5500, "ST-Ericsson U5500 Platform")
.boot_params = 0x00000100,
.map_io = u5500_map_io,
.init_irq = ux500_init_irq,

2
arch/arm/mach-ux500/clock.c
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@ -579,6 +579,8 @@ int __init clk_init(void)
clk_prcc_ops.enable = clk_prcc_ops.disable = NULL;
clk_prcmu_ops.enable = clk_prcmu_ops.disable = NULL;
clk_per6clk.rate = 26000000;
clk_uartclk.rate = 36360000;
clk_sdmmcclk.rate = 99900000;
}
clkdev_add_table(u8500_common_clks, ARRAY_SIZE(u8500_common_clks));

3
arch/arm/mach-ux500/include/mach/setup.h
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@ -22,6 +22,9 @@ extern void __init u5500_init_devices(void);
extern void __init u8500_init_devices(void);
extern void __init ux500_init_irq(void);
extern void __init u5500_sdi_init(void);
/* We re-use nomadik_timer for this platform */
extern void nmdk_timer_init(void);