[U-Boot] [PATCH 4/7] colibri_imx7: implement board level USB PHY mode

[Stefan Agner]

From: Stefan Agner <stefan.agner at toradex.com>

Implement board level USB PHY mode callback. On USB OTG Port 1
the Colibri standard foresees GPIO USBC_DET to decide whether the
port should run in Host or Device mode.

Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
---

 board/toradex/colibri_imx7/colibri_imx7.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/board/toradex/colibri_imx7/colibri_imx7.c b/board/toradex/colibri_imx7/colibri_imx7.c
index e1340c323b..c03bde168a 100644
--- a/board/toradex/colibri_imx7/colibri_imx7.c
+++ b/board/toradex/colibri_imx7/colibri_imx7.c
@@ -23,6 +23,7 @@
 #include <netdev.h>
 #include <power/pmic.h>
 #include <power/rn5t567_pmic.h>
+#include <usb.h>
 #include <usb/ehci-ci.h>
 #include "../common/tdx-common.h"
 
@@ -46,6 +47,8 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_3P3V_49OHM | PAD_CTL_PUS_PU5KOHM)
 
+#define USB_CDET_GPIO	IMX_GPIO_NR(7, 14)
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -71,6 +74,12 @@ static iomux_v3_cfg_t const usdhc1_pads[] = {
 	MX7D_PAD_GPIO1_IO00__GPIO1_IO0 | MUX_PAD_CTRL(NO_PAD_CTRL),
 };
 
+#ifdef CONFIG_USB_EHCI_MX7
+static iomux_v3_cfg_t const usb_cdet_pads[] = {
+	MX7D_PAD_ENET1_CRS__GPIO7_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+#endif
+
 #ifdef CONFIG_NAND_MXS
 static iomux_v3_cfg_t const gpmi_pads[] = {
 	MX7D_PAD_SD3_DATA0__NAND_DATA00 | MUX_PAD_CTRL(NAND_PAD_CTRL),
@@ -319,6 +328,11 @@ int board_init(void)
 	setup_lcd();
 #endif
 
+#ifdef CONFIG_USB_EHCI_MX7
+	imx_iomux_v3_setup_multiple_pads(usb_cdet_pads, ARRAY_SIZE(usb_cdet_pads));
+	gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
+#endif
+
 	return 0;
 }
 
@@ -417,4 +431,18 @@ int board_ehci_hcd_init(int port)
 	}
 	return 0;
 }
+
+int board_usb_phy_mode(int port)
+{
+	switch (port) {
+	case 0:
+		if (gpio_get_value(USB_CDET_GPIO))
+			return USB_INIT_DEVICE;
+		else
+			return USB_INIT_HOST;
+	case 1:
+	default:
+		return USB_INIT_HOST;
+	}
+}
 #endif
-- 
2.12.0