mx31moboard: added usb xcvr reset for mx31moboard

Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 49 insertions, 27 deletions

diff --git a/arch/arm/mach-mx3/mx31moboard-devboard.c b/arch/arm/mach-mx3/mx31moboard-devboard.c
index 4704405165a1..2f2f142f075e 100644
--- a/arch/arm/mach-mx3/mx31moboard-devboard.c
+++ b/arch/arm/mach-mx3/mx31moboard-devboard.c
@@ -116,23 +116,25 @@ static struct fsl_usb2_platform_data usb_pdata = {
         .phy_mode       = FSL_USB2_PHY_ULPI,
 };
 
-#define OTG_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST)
-#define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+                        PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+#define OTG_EN_B        IOMUX_TO_GPIO(MX31_PIN_USB_OC)
 
 static void devboard_usbotg_init(void)
 {
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, OTG_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
 
         gpio_request(OTG_EN_B, "usb-udc-en");
         gpio_direction_output(OTG_EN_B, 0);
diff --git a/arch/arm/mach-mx3/mx31moboard-marxbot.c b/arch/arm/mach-mx3/mx31moboard-marxbot.c
index 641c3d6153ae..b817a4a5bcba 100644
--- a/arch/arm/mach-mx3/mx31moboard-marxbot.c
+++ b/arch/arm/mach-mx3/mx31moboard-marxbot.c
@@ -120,23 +120,25 @@ static struct fsl_usb2_platform_data usb_pdata = {
         .phy_mode       = FSL_USB2_PHY_ULPI,
 };
 
-#define OTG_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST)
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+                        PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
 #define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
 
 static void marxbot_usbotg_init(void)
 {
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, OTG_PAD_CFG);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, OTG_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
 
         gpio_request(OTG_EN_B, "usb-udc-en");
         gpio_direction_output(OTG_EN_B, 0);
diff --git a/arch/arm/mach-mx3/mx31moboard.c b/arch/arm/mach-mx3/mx31moboard.c
index b86b8a757c99..53ce60bdc823 100644
--- 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>
@@ -56,6 +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 = {
@@ -143,6 +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,
 };
@@ -168,6 +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;