ARM: dts: orange-pi-zero-plus2: enable USB OTG port

Enable support for USB OTG port on Orange Pi Zero Plus 2 (both H3 and H5
variants). As, according to the board schematics, the USB OTG port cannot
provide power to external devices, we set dr_mode to peripheral.
Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
Link: https://lore.kernel.org/r/20200615130223.34464-1-diego.rondini@kynetics.comSigned-off-by: Maxime Ripard <maxime@cerno.tech>

arch/arm/boot/dts/sun8i-h3-orangepi-zero-plus2.dts

@@ -88,6 +88,10 @@ &de {
 	status = "okay";
 };
 
+&ehci0 {
+	status = "okay";
+};
+
 &hdmi {
 	status = "okay";
 };
@@ -132,8 +136,27 @@ &mmc2 {
 	status = "okay";
 };
 
+&ohci0 {
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pa_pins>;
 	status = "okay";
 };
+
+&usb_otg {
+	/*
+	 * According to schematics CN1 MicroUSB port can be used to take
+	 * external 5V to power up the board VBUS. On the contrary CN1 MicroUSB
+	 * port cannot provide power externally even if the board is powered
+	 * via GPIO pins. It thus makes sense to force peripheral mode.
+	 */
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};

arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus2.dts

@@ -48,6 +48,10 @@ &de {
 	status = "okay";
 };
 
+&ehci0 {
+	status = "okay";
+};
+
 &hdmi {
 	status = "okay";
 };
@@ -92,6 +96,10 @@ &mmc2 {
 	status = "okay";
 };
 
+&ohci0 {
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pa_pins>;
@@ -103,3 +111,18 @@ &uart1 {
 	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
 	status = "okay";
 };
+
+&usb_otg {
+	/*
+	 * According to schematics CN1 MicroUSB port can be used to take
+	 * external 5V to power up the board VBUS. On the contrary CN1 MicroUSB
+	 * port cannot provide power externally even if the board is powered
+	 * via GPIO pins. It thus makes sense to force peripheral mode.
+	 */
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};