Re: [v3] arm64: dts: sc7180: add nodes for idp display

From: Stephen Boyd
Date: Wed Jun 24 2020 - 21:07:47 EST


Quoting Harigovindan P (2020-02-17 00:58:42)
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 388f50ad4fde..349db8fe78a5 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -232,6 +233,57 @@ vreg_bob: bob {
> };
> };
>
> +&dsi0 {
> + status = "okay";
> +
> + vdda-supply = <&vreg_l3c_1p2>;
> +
> + panel@0 {
> + compatible = "visionox,rm69299-1080p-display";
> + reg = <0>;
> +
> + vdda-supply = <&vreg_l8c_1p8>;
> + vdd3p3-supply = <&vreg_l18a_2p8>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&disp_pins>;
> +
> + reset-gpios = <&pm6150l_gpio 3 GPIO_ACTIVE_HIGH>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port@0 {
> + reg = <0>;
> + panel0_in: endpoint {
> + remote-endpoint = <&dsi0_out>;
> + };
> + };
> + };
> + };
> +
> + ports {
> + port@1 {
> + endpoint {
> + remote-endpoint = <&panel0_in>;
> + data-lanes = <0 1 2 3>;

Is this property needed? If it's the default assumption it would be nice
to omit it so that we don't have to think about it.

> + };
> + };
> + };
> +};
> +
> +&dsi_phy {
> + status = "okay";
> +};
> +
> +&mdp {
> + status = "okay";
> +};
> +
> +&mdss {
> + status = "okay";
> +};
> +
> &qspi {
> status = "okay";
> pinctrl-names = "default";
> @@ -289,6 +341,17 @@ &usb_1_qmpphy {
>
> /* PINCTRL - additions to nodes defined in sc7180.dtsi */
>
> +&pm6150l_gpio {
> + disp_pins: disp-pins {

Curious how this works. It looks like PMIC GPIOS are expecting the node
to look like:

disp_pins: disp-pins {
pinconf {
pins = "gpio3";
function = PMIC_GPIO_FUNC_FUNC1;
qcom,drive-strength = <PMIC_GPIO_STRENGTH_MED>;
power-source = <PM6150_GPIO_VPH>;
bias-disable;
output-low;
};

but this doesn't use the macros or the subnode for pinconf. Why? Also,
the PM6150_GPIO_VPH macro doesn't exist.

> + pins = "gpio3";
> + function = "func1";
> + qcom,drive-strength = <2>;
> + power-source = <0>;
> + bias-disable;
> + output-low;
> + };
> +};
> +