efikamx: add reset
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>
diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c
index f84452f..4b2718b 100644
--- a/arch/arm/mach-mx5/board-mx51_efikamx.c
+++ b/arch/arm/mach-mx5/board-mx51_efikamx.c
@@ -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 @@
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 @@
.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 @@
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)
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 7a1e1f8..05676fb 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h
@@ -50,5 +50,5 @@
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
diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c
index 925bce4..c3972c5 100644
--- a/arch/arm/plat-mxc/system.c
+++ b/arch/arm/plat-mxc/system.c
@@ -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 @@
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 {