nitrogen6x: add otg usb host/device mode support

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index daa3fc8..53cb8df 100644 (file)
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -30,6 +30,7 @@
 #include <i2c.h>
 
 DECLARE_GLOBAL_DATA_PTR;
+#define GP_USB_OTG_PWR IMX_GPIO_NR(3, 22)
 
 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                  \
        PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
@@ -179,6 +180,14 @@ iomux_v3_cfg_t const enet_pads2[] = {
        MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 };
 
+static iomux_v3_cfg_t const misc_pads[] = {
+       MX6_PAD_GPIO_1__USB_OTG_ID              | MUX_PAD_CTRL(WEAK_PULLUP),
+       MX6_PAD_KEY_COL4__USBOH3_USBOTG_OC      | MUX_PAD_CTRL(WEAK_PULLUP),
+       MX6_PAD_EIM_D30__USBOH3_USBH1_OC        | MUX_PAD_CTRL(WEAK_PULLUP),
+       /* OTG Power enable */
+       MX6_PAD_EIM_D22__GPIO_3_22              | MUX_PAD_CTRL(OUTPUT_40OHM),
+};
+
 /* wl1271 pads on nitrogen6x */
 iomux_v3_cfg_t const wl12xx_pads[] = {
        (MX6_PAD_NANDF_CS1__GPIO_6_14 & ~MUX_PAD_CTRL_MASK)
@@ -250,6 +259,15 @@ int board_ehci_hcd_init(int port)
 
        return 0;
 }
+
+int board_ehci_power(int port, int on)
+{
+       if (port)
+               return 0;
+       gpio_set_value(GP_USB_OTG_PWR, on);
+       return 0;
+}
+
 #endif
 
 #ifdef CONFIG_FSL_ESDHC
@@ -369,6 +387,11 @@ int board_eth_init(bd_t *bis)
                free(bus);
        }
 #endif
+
+#ifdef CONFIG_MV_UDC
+       /* For otg ethernet*/
+       usb_eth_initialize(bis);
+#endif
        return 0;
 }
 
@@ -685,6 +708,7 @@ int board_early_init_f(void)
        gpio_direction_input(WL12XX_WL_IRQ_GP);
        gpio_direction_output(WL12XX_WL_ENABLE_GP, 0);
        gpio_direction_output(WL12XX_BT_ENABLE_GP, 0);
+       gpio_direction_output(GP_USB_OTG_PWR, 0); /* OTG power off */
 
        imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
        setup_buttons();
@@ -713,6 +737,8 @@ int board_init(void)
                        IOMUXC_GPR1_OTG_ID_MASK,
                        IOMUXC_GPR1_OTG_ID_GPIO1);
 
+       imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
+
        /* address of boot parameters */
        gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;