Re: [PATCH 3/3] arm64: dts: mediatek: enable USB device port for mt8195-demo board

[Matthias Brugger <matthias.bgg@gmail.com>]

On 05/01/2023 10:28, Macpaul Lin wrote:
> 1. Enable USB device port (USB port0).
> 2. Enable u2 speed for other USB HOST (USB port1/2/3).
> 3. Configure mt6360 (TYPEC) related pinctrls.
> 
> Note: Full dual-role switch capability requires TYPEC MUX driver and dts
> update will be send in separate patches.
> 
> Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
> ---
>   arch/arm64/boot/dts/mediatek/mt8195-demo.dts | 51 ++++++++++++++++++++
>   1 file changed, 51 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> index 07a864cb8b54..207bb5f4c58f 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt8195-demo.dts
> @@ -12,6 +12,7 @@
>   #include <dt-bindings/input/input.h>
>   #include <dt-bindings/pinctrl/mt8195-pinfunc.h>
>   #include <dt-bindings/regulator/mediatek,mt6360-regulator.h>
> +#include <dt-bindings/usb/pd.h>
>   
>   / {
>   	model = "MediaTek MT8195 demo board";
> @@ -380,6 +381,22 @@
>   		};
>   	};
>   
> +	mt6360_pins: mt6360-pins {
> +		pins {
> +			pinmux = <PINMUX_GPIO100__FUNC_GPIO100>,
> +				 <PINMUX_GPIO101__FUNC_GPIO101>;
> +			input-enable;
> +			bias-pull-up;
> +		};
> +	};
> +
> +	u3_p0_vbus: u3_p0vbusdefault {
> +		pins_cmd_dat {
> +			pinmux = <PINMUX_GPIO63__FUNC_VBUSVALID>;
> +			input-enable;
> +		};
> +	};
> +
>   	uart0_pins: uart0-pins {
>   		pins {
>   			pinmux = <PINMUX_GPIO98__FUNC_UTXD0>,
> @@ -393,6 +410,14 @@
>   				 <PINMUX_GPIO103__FUNC_URXD1>;
>   		};
>   	};
> +
> +	usb_otg_vbus: usb-otg-vbus-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "otg-vbus";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		enable-active-high;
> +	};
>   };
>   
>   
> @@ -412,6 +437,22 @@
>   	status = "okay";
>   };
>   
> +&u3port0 {
> +	status = "okay";
> +};
> +
> +&u2port1 {
> +	status = "okay";
> +};
> +
> +&u2port2 {
> +	status = "okay";
> +};
> +
> +&u2port3 {
> +	status = "okay";
> +};
> +
>   &u3phy0 {
>   	status = "okay";
>   };
> @@ -428,6 +469,16 @@
>   	status = "okay";
>   };
>   
> +&ssusb {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&u3_p0_vbus>;
> +	vusb33-supply = <&mt6359_vusb_ldo_reg>;
> +	dr_mode = "otg";
> +	mediatek,usb3-drd;

What it that used for?
git grep didn't gave me any hit.

Regards,
Matthias

> +	usb-role-switch;
> +	status = "okay";
> +};
> +
>   &xhci0 {
>   	vusb33-supply = <&mt6359_vusb_ldo_reg>;
>   	vbus-supply = <&otg_vbus_regulator>;