mx31moboard: added usb xcvr reset for mx31moboard

[pandora-kernel.git] / arch / arm / mach-mx3 / mx31moboard.c

diff --git a/arch/arm/mach-mx3/mx31moboard.c b/arch/arm/mach-mx3/mx31moboard.c
index a17f2e4..53ce60b 100644 (file)
--- a/arch/arm/mach-mx3/mx31moboard.c
+++ b/arch/arm/mach-mx3/mx31moboard.c
@@ -16,6 +16,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -36,6 +37,7 @@
 #include <mach/iomux-mx3.h>
 #include <mach/i2c.h>
 #include <mach/mmc.h>
+#include <mach/mx31.h>
 
 #include "devices.h"
 
@@ -55,6 +57,8 @@ static unsigned int moboard_pins[] = {
        MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
        MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
        MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
+       /* USB reset */
+       MX31_PIN_GPIO1_0__GPIO1_0,
 };
 
 static struct physmap_flash_data mx31moboard_flash_data = {
@@ -142,6 +146,19 @@ static struct imxmmc_platform_data sdhc1_pdata = {
        .exit   = moboard_sdhc1_exit,
 };
 
+/*
+ * this pin is dedicated for all mx31moboard systems, so we do it here
+ */
+#define USB_RESET_B    IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
+
+static void usb_xcvr_reset(void)
+{
+       gpio_request(USB_RESET_B, "usb-reset");
+       gpio_direction_output(USB_RESET_B, 0);
+       mdelay(1);
+       gpio_set_value(USB_RESET_B, 1);
+}
+
 static struct platform_device *devices[] __initdata = {
        &mx31moboard_flash,
 };
@@ -167,6 +184,8 @@ static void __init mxc_board_init(void)
 
        mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata);
 
+       usb_xcvr_reset();
+
        switch (mx31moboard_baseboard) {
        case MX31NOBOARD:
                break;
@@ -197,7 +216,7 @@ MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
        .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
        .boot_params    = PHYS_OFFSET + 0x100,
        .map_io         = mx31_map_io,
-       .init_irq       = mxc_init_irq,
+       .init_irq       = mx31_init_irq,
        .init_machine   = mxc_board_init,
        .timer          = &mx31moboard_timer,
 MACHINE_END