Re: [PATCH v8 10/10] arm64: dts: rockchip: rk3399-evb-ind: Add support for DisplayPort

[Peter Chen <hzpeterchen@gmail.com>]

> +&i2c4 {
> +       i2c-scl-rising-time-ns = <475>;
> +       i2c-scl-falling-time-ns = <26>;
> +       status = "okay";
> +
> +       usbc0: typec-portc@22 {
> +               compatible = "fcs,fusb302";
> +               reg = <0x22>;
> +               interrupt-parent = <&gpio1>;
> +               interrupts = <RK_PA2 IRQ_TYPE_LEVEL_LOW>;
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&usbc0_int>;
> +               vbus-supply = <&vbus_typec>;
> +
> +               usb_con: connector {
> +                       compatible = "usb-c-connector";
> +                       label = "USB-C";
> +                       data-role = "dual";
> +                       power-role = "dual";
> +                       try-power-role = "sink";
> +                       op-sink-microwatt = <1000000>;
> +                       sink-pdos =
> +                               <PDO_FIXED(5000, 2500, PDO_FIXED_USB_COMM)>;
> +                       source-pdos =
> +                               <PDO_FIXED(5000, 1500, PDO_FIXED_USB_COMM)>;
> +
> +                       altmodes {
> +                               displayport {
> +                                       svid = /bits/ 16 <0xff01>;
> +                                       vdo = <0x00001c46>;
> +                               };
> +                       };
> +
> +                       ports {
> +                               #address-cells = <1>;
> +                               #size-cells = <0>;
> +
> +                               port@0 {
> +                                       reg = <0>;
> +
> +                                       usbc_hs: endpoint {
> +                                               remote-endpoint = <&u2phy0_typec_hs>;
> +                                       };
> +                               };
> +

Why USB2 PHY needs to be notified for Type-C connection?

> +                               port@1 {
> +                                       reg = <1>;
> +
> +                                       usbc_ss: endpoint {
> +                                               remote-endpoint = <&tcphy0_typec_ss>;
> +                                       };
> +                               };
> +
> +                               port@2 {
> +                                       reg = <2>;
> +
> +                                       usbc_dp: endpoint {
> +                                               remote-endpoint = <&tcphy0_typec_dp>;
> +                                       };
> +                               };
> +                       };
> +               };
> +       };
> +};
> +

.....
>
>  &u2phy0 {
>         status = "okay";
> +
> +       port {
> +               u2phy0_typec_hs: endpoint {
> +                       remote-endpoint = <&usbc_hs>;
> +               };
> +       };
>  };
>

There is no switch and mux, how to co-work with Type-C?

Best regards,
Peter