[PATCH 12/12] riscv: dts: thead: enable USB3 ports on Lichee Pi 4A
Icenowy Zheng
zhengxingda at iscas.ac.cn
Tue Sep 1 11:32:28 PDT 2026
在 2026-05-07四的 16:17 +0800，Icenowy Zheng写道：
> 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;
OHHHHH onboard_usb_dev now matches "usb-a-connector" and is able to
power on the vbus-supply regulator.
This hack should be removable now.
Thanks,
Icenowy
> + };
> +
> + 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>;
> + };
> + };
> + };
> + };
> +};
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