[PATCH v4 1/2] arm64: dts: qcom: x1e78100-t14s: add hpd gpio to dp controller

[Dmitry Baryshkov]

On Wed, Apr 02, 2025 at 10:58:32AM +0100, Christopher Obbard wrote:
> The eDP controller has an HPD GPIO. Describe it in the device tree
> for the generic T14s model, as the HPD GPIO is used in both the
> OLED and LCD models which inherit this device tree.
> 
> Signed-off-by: Christopher Obbard <christopher.obbard at linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> index 962fb050c55c4fd33f480a21a8c47a484d0c82b8..b0dbe4eaa77e5a6f862fd0db2a3c91db2aab5030 100644
> --- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
> @@ -975,6 +975,9 @@ &mdss_dp3 {
>  	compatible = "qcom,x1e80100-dp";
>  	/delete-property/ #sound-dai-cells;
>  
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&edp_hpd_active>;
> +
>  	status = "okay";
>  
>  	aux-bus {
> @@ -1215,6 +1218,11 @@ &tlmm {
>  			       <72 2>, /* Secure EC I2C connection (?) */
>  			       <238 1>; /* UFS Reset */
>  
> +	edp_hpd_active: edp-hpd-active-state {
> +		pins = "gpio119";
> +		function = "edp_hot";
> +	};

This looks generic enough and can go into the SoC dtsi.

> +
>  	eusb3_reset_n: eusb3-reset-n-state {
>  		pins = "gpio6";
>  		function = "gpio";
> 
> -- 
> 2.49.0
> 

-- 
With best wishes
Dmitry