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efikamx: add reset

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The efikamx board is using a gpio to reset the board so add support
for it

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Arnaud Patard (Rtp) 2010-10-27 14:40:55 +02:00 committed by Sascha Hauer
parent c6e34a4cbe
commit c2932bf470
3 changed files with 33 additions and 1 deletions
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24
arch/arm/mach-mx5/board-mx51_efikamx.c
View File

@ -56,6 +56,10 @@
#define EFIKAMX_SPI_CS0 (3*32 + 24)
#define EFIKAMX_SPI_CS1 (3*32 + 25)
/* board 1.1 doesn't have same reset gpio */
#define EFIKAMX_RESET1_1 (2*32 + 2)
#define EFIKAMX_RESET (0*32 + 4)
/* the pci ids pin have pull up. they're driven low according to board id */
#define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
@ -110,6 +114,10 @@ static iomux_v3_cfg_t mx51efikamx_pads[] = {
MX51_PAD_CSPI1_SS1__GPIO_4_25,
MX51_PAD_CSPI1_RDY__ECSPI1_RDY,
MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
/* reset */
MX51_PAD_DI1_PIN13__GPIO_3_2,
MX51_PAD_GPIO_1_4__GPIO_1_4,
};
/* Serial ports */
@ -296,6 +304,14 @@ static const struct spi_imx_master mx51_efikamx_spi_pdata __initconst = {
.num_chipselect = ARRAY_SIZE(mx51_efikamx_spi_cs),
};
void mx51_efikamx_reset(void)
{
if (system_rev == 0x11)
gpio_direction_output(EFIKAMX_RESET1_1, 0);
else
gpio_direction_output(EFIKAMX_RESET, 0);
}
static void __init mxc_board_init(void)
{
mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
@ -317,6 +333,14 @@ static void __init mxc_board_init(void)
spi_register_board_info(mx51_efikamx_spi_board_info,
ARRAY_SIZE(mx51_efikamx_spi_board_info));
imx51_add_ecspi(0, &mx51_efikamx_spi_pdata);
if (system_rev == 0x11) {
gpio_request(EFIKAMX_RESET1_1, "reset");
gpio_direction_output(EFIKAMX_RESET1_1, 1);
} else {
gpio_request(EFIKAMX_RESET, "reset");
gpio_direction_output(EFIKAMX_RESET, 1);
}
}
static void __init mx51_efikamx_timer_init(void)

2
arch/arm/plat-mxc/include/mach/common.h
View File

@ -50,5 +50,5 @@ extern void mxc_arch_reset_init(void __iomem *);
extern void mxc91231_power_off(void);
extern void mxc91231_arch_reset(int, const char *);
extern void mxc91231_prepare_idle(void);
extern void mx51_efikamx_reset(void);
#endif

8
arch/arm/plat-mxc/system.c
View File

@ -26,6 +26,7 @@
#include <mach/common.h>
#include <asm/proc-fns.h>
#include <asm/system.h>
#include <asm/mach-types.h>
static void __iomem *wdog_base;
@ -42,6 +43,13 @@ void arch_reset(char mode, const char *cmd)
return;
}
#endif
#ifdef CONFIG_MACH_MX51_EFIKAMX
if (machine_is_mx51_efikamx()) {
mx51_efikamx_reset();
return;
}
#endif
if (cpu_is_mx1()) {
wcr_enable = (1 << 0);
} else {