arm64: dts: imx8mq-nitrogen: add USB HOST support

Add the description for the USB host port.
This port is linked to a resettable USB HUB so handle
this reset signal with a GPIO hog.

Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
index b46f45a..5553f3c 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
@@ -102,6 +102,15 @@
        };
 };
 
+/* Release reset of the USB Host HUB */
+&gpio1 {
+       usb-host-reset-hog {
+               gpio-hog;
+               gpios = <14 GPIO_ACTIVE_HIGH>;
+               output-high;
+       };
+};
+
 &i2c1 {
        clock-frequency = <400000>;
        pinctrl-names = "default";
@@ -213,6 +222,17 @@
        status = "okay";
 };
 
+&usb_dwc3_1 {
+       dr_mode = "host";
+       status = "okay";
+};
+
+&usb3_phy1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_usb3_1>;
+       status = "okay";
+};
+
 &usdhc1 {
        assigned-clocks = <&clk IMX8MQ_CLK_USDHC1>;
        assigned-clock-rates = <400000000>;
@@ -388,6 +408,12 @@
                >;
        };
 
+       pinctrl_usb3_1: usb3-1grp {
+               fsl,pins = <
+                       MX8MQ_IOMUXC_GPIO1_IO14_GPIO1_IO14              0x16
+               >;
+       };
+
        pinctrl_usdhc1: usdhc1grp {
                fsl,pins = <
                        MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK                 0x83