[PATCH v4 2/4] arm64: dts: imx8mq-nitrogen: add USB HOST support

[Adrien Grassein]

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@xxxxxxxxx>
---
 .../boot/dts/freescale/imx8mq-nitrogen.dts    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
index b46f45a82be1..5553f3c84dbc 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
@@ -102,6 +102,15 @@ ethphy0: ethernet-phy@4 {
 	};
 };
 
+/* 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 @@ &usb3_phy0 {
 	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 @@ MX8MQ_IOMUXC_GPIO1_IO13_USB1_OTG_OC		0x16
 		>;
 	};
 
+	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
-- 
2.25.1