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From db5f028309ede13767e2ba356c1975ac37a4fd6c Mon Sep 17 00:00:00 2001
From: Andre Przywara <andre.przywara@arm.com>
Date: Mon, 31 Oct 2022 11:13:57 +0000
Subject: [PATCH] arm64: dts: allwinner: h616: OrangePi Zero 2: Add USB nodes
The OrangePi Zero 2 has one USB-A host port, VBUS is provided by
a GPIO controlled regulator.
The USB-C port is meant to power the board, but is also connected to
the USB 0 port, which we configure as an MUSB peripheral.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20221031111358.3387297-7-andre.przywara@arm.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
.../allwinner/sun50i-h616-orangepi-zero2.dts | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts
@@ -49,8 +49,24 @@
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
+
+ reg_usb1_vbus: regulator-usb1-vbus {
+ compatible = "regulator-fixed";
+ regulator-name = "usb1-vbus";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ vin-supply = <®_vcc5v>;
+ enable-active-high;
+ gpio = <&pio 2 16 GPIO_ACTIVE_HIGH>; /* PC16 */
+ };
+};
+
+&ehci1 {
+ status = "okay";
};
+/* USB 2 & 3 are on headers only. */
+
&emac0 {
pinctrl-names = "default";
pinctrl-0 = <&ext_rgmii_pins>;
@@ -76,6 +92,10 @@
status = "okay";
};
+&ohci1 {
+ status = "okay";
+};
+
&r_rsb {
status = "okay";
@@ -211,3 +231,24 @@
pinctrl-0 = <&uart0_ph_pins>;
status = "okay";
};
+
+&usbotg {
+ /*
+ * PHY0 pins are connected to a USB-C socket, but a role switch
+ * is not implemented: both CC pins are pulled to GND.
+ * The VBUS pins power the device, so a fixed peripheral mode
+ * is the best choice.
+ * The board can be powered via GPIOs, in this case port0 *can*
+ * act as a host (with a cable/adapter ignoring CC), as VBUS is
+ * then provided by the GPIOs. Any user of this setup would
+ * need to adjust the DT accordingly: dr_mode set to "host",
+ * enabling OHCI0 and EHCI0.
+ */
+ dr_mode = "peripheral";
+ status = "okay";
+};
+
+&usbphy {
+ usb1_vbus-supply = <®_usb1_vbus>;
+ status = "okay";
+};
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