[PATCH 12/12] riscv: dts: thead: enable USB3 ports on Lichee Pi 4A

[Icenowy Zheng]

The Lichee Pi 4A board features an onboard VIA VL817 hub connected to
the SoC's USB3 as upstream and 4 USB-3.0-capable Type-A ports as
downstream.

Enable SoC USB3 and the hub on Lichee Pi 4A.

Signed-off-by: Icenowy Zheng <zhengxingda at iscas.ac.cn>
---
 .../dts/thead/th1520-lichee-module-4a.dtsi    |  15 ++
 .../boot/dts/thead/th1520-lichee-pi-4a.dts    | 231 ++++++++++++++++++
 2 files changed, 246 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi b/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
index 8e76b63e0100a..bfda5a6b56b8f 100644
--- a/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520-lichee-module-4a.dtsi
@@ -20,6 +20,16 @@ memory at 0 {
 		device_type = "memory";
 		reg = <0x0 0x00000000 0x2 0x00000000>;
 	};
+
+	/* TODO: Switch to AON regulator when it's available. */
+	avdd33_usb3: regulator-avdd33-usb3 {
+		compatible = "regulator-fixed";
+		regulator-name = "AVDD33_USB3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		/* Marked as always on on the schematics */
+		regulator-always-on;
+	};
 };
 
 &osc {
@@ -202,3 +212,8 @@ &sdio0 {
 	max-frequency = <198000000>;
 	status = "okay";
 };
+
+&usb_phy {
+	avdd33-usb3-supply = <&avdd33_usb3>;
+	status = "okay";
+};
diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
index 354f3893aa8cf..de38f1f457e6b 100644
--- a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
+++ b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts
@@ -4,6 +4,7 @@
  */
 
 #include "th1520-lichee-module-4a.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Sipeed Lichee Pi 4A";
@@ -97,6 +98,141 @@ fan: pwm-fan {
 		cooling-levels = <0 66 196 255>;
 	};
 
+	hub_5v: regulator-hub-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "HUB_5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&ioexp3 3 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	vcc5v_usb: regulator-vcc5v-usb {
+		compatible = "regulator-fixed";
+		regulator-name = "VCC5V_USB";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		/*
+		 * Workaround for Linux currently being not able to power on
+		 * Vbus for USB Type-A connectors.
+		 */
+		regulator-always-on;
+	};
+
+	connector-usb-a-1 {
+		compatible = "usb-a-connector";
+		vbus-supply = <&vcc5v_usb>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				usb_a_1_hs_ep: endpoint {
+					remote-endpoint = <&hub_hs_port1_ep>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				usb_a_1_ss_ep: endpoint {
+					remote-endpoint = <&hub_ss_port1_ep>;
+				};
+			};
+		};
+	};
+
+	connector-usb-a-2 {
+		compatible = "usb-a-connector";
+		vbus-supply = <&vcc5v_usb>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				usb_a_2_hs_ep: endpoint {
+					remote-endpoint = <&hub_hs_port2_ep>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				usb_a_2_ss_ep: endpoint {
+					remote-endpoint = <&hub_ss_port2_ep>;
+				};
+			};
+		};
+	};
+
+	connector-usb-a-3 {
+		compatible = "usb-a-connector";
+		vbus-supply = <&vcc5v_usb>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				usb_a_3_hs_ep: endpoint {
+					remote-endpoint = <&hub_hs_port3_ep>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				usb_a_3_ss_ep: endpoint {
+					remote-endpoint = <&hub_ss_port3_ep>;
+				};
+			};
+		};
+	};
+
+	connector-usb-a-4 {
+		compatible = "usb-a-connector";
+		vbus-supply = <&vcc5v_usb>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				usb_a_4_hs_ep: endpoint {
+					remote-endpoint = <&hub_hs_port4_ep>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				usb_a_4_ss_ep: endpoint {
+					remote-endpoint = <&hub_ss_port4_ep>;
+				};
+			};
+		};
+	};
+};
+
+&aogpio {
+	/* Route USB2 to the onboard hub for normal operation */
+	sel-usb-hub-hog {
+		gpio-hog;
+		gpios = <4 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
 };
 
 &dpu {
@@ -262,3 +398,98 @@ &uart0 {
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
 };
+
+&usb {
+	dr_mode = "host";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_hs: hub at 1 {
+		compatible = "usb2109,2817";
+		reg = <1>;
+		peer-hub = <&hub_ss>;
+		vdd-supply = <&hub_5v>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 1 {
+				reg = <1>;
+
+				hub_hs_port1_ep: endpoint {
+					remote-endpoint = <&usb_a_1_hs_ep>;
+				};
+			};
+
+			port at 2 {
+				reg = <2>;
+
+				hub_hs_port2_ep: endpoint {
+					remote-endpoint = <&usb_a_2_hs_ep>;
+				};
+			};
+
+			port at 3 {
+				reg = <3>;
+
+				hub_hs_port3_ep: endpoint {
+					remote-endpoint = <&usb_a_3_hs_ep>;
+				};
+			};
+
+			port at 4 {
+				reg = <4>;
+
+				hub_hs_port4_ep: endpoint {
+					remote-endpoint = <&usb_a_4_hs_ep>;
+				};
+			};
+		};
+	};
+
+	hub_ss: hub at 2 {
+		compatible = "usb2109,817";
+		reg = <2>;
+		peer-hub = <&hub_hs>;
+		vdd-supply = <&hub_5v>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 1 {
+				reg = <1>;
+
+				hub_ss_port1_ep: endpoint {
+					remote-endpoint = <&usb_a_1_ss_ep>;
+				};
+			};
+
+			port at 2 {
+				reg = <2>;
+
+				hub_ss_port2_ep: endpoint {
+					remote-endpoint = <&usb_a_2_ss_ep>;
+				};
+			};
+
+			port at 3 {
+				reg = <3>;
+
+				hub_ss_port3_ep: endpoint {
+					remote-endpoint = <&usb_a_3_ss_ep>;
+				};
+			};
+
+			port at 4 {
+				reg = <4>;
+
+				hub_ss_port4_ep: endpoint {
+					remote-endpoint = <&usb_a_4_ss_ep>;
+				};
+			};
+		};
+	};
+};
-- 
2.52.0