linux-kernel - [PATCH] arm64: dts: imx8mq-nitrogen: add USB support

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Date:   Tue, 26 Jan 2021 22:55:11 +0100
From:   Adrien Grassein <adrien.grassein@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     gary.bisson@...ndarydevices.com, troy.kisky@...ndarydevices.com,
        robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Adrien Grassein <adrien.grassein@...il.com>
Subject: [PATCH] arm64: dts: imx8mq-nitrogen: add USB support

add USB support for imx8mq-nitrogen. It consists
in 2 phys: OTG and host.

The OTG port uses a dedicated regulator for vbus.

Signed-off-by: Adrien Grassein <adrien.grassein@...il.com>
---
 .../boot/dts/freescale/imx8mq-nitrogen.dts    | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
index 81d269296610..fb8acd83a280 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-nitrogen.dts
@@ -34,6 +34,17 @@ power {
 		};
 	};
 
+	reg_usb_otg_vbus: regulator-usb-otg-vbus {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg_usbotg_vbus>;
+		regulator-name = "usb_otg_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio1 12 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	reg_vref_0v9: regulator-vref-0v9 {
 		compatible = "regulator-fixed";
 		regulator-name = "vref-0v9";
@@ -190,6 +201,25 @@ &uart2 {
 	status = "okay";
 };
 
+&usb_dwc3_0 {
+	dr_mode = "otg";
+	status = "okay";
+};
+
+&usb3_phy0 {
+	vbus-supply = <&reg_usb_otg_vbus>;
+	status = "okay";
+};
+
+&usb_dwc3_1 {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usb3_phy1 {
+	status = "okay";
+};
+
 &usdhc1 {
 	assigned-clocks = <&clk IMX8MQ_CLK_USDHC1>;
 	assigned-clock-rates = <400000000>;
@@ -339,6 +369,12 @@ MX8MQ_IOMUXC_SD2_WP_GPIO2_IO20		0x16
 		>;
 	};
 
+	pinctrl_reg_usbotg_vbus: reg-usbotg-vbusgrp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_GPIO1_IO12_GPIO1_IO12	0x16
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_UART1_RXD_UART1_DCE_RX		0x45
-- 
2.25.1