linux-kernel - Re: [PATCH v5 4/6] arm64: dts: qcom: x1e80100-crd: Enable external DisplayPort support

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Message-ID: <ZzOK2Xz1QQvugGnG@linaro.org>
Date: Tue, 12 Nov 2024 19:05:29 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>
Cc: Rajendra Nayak <quic_rjendra@...cinc.com>,
	Sibi Sankar <quic_sibis@...cinc.com>,
	Johan Hovold <johan@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Trilok Soni <quic_tsoni@...cinc.com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v5 4/6] arm64: dts: qcom: x1e80100-crd: Enable external
 DisplayPort support

On 24-11-12 19:01:13, Abel Vesa wrote:
> The X Elite CRD provides external DisplayPort on all 3 USB Type-C ports.
> Each one of this ports is connected to a dedicated DisplayPort
> controller.
> 
> Due to support missing in the USB/DisplayPort combo PHY driver,
> the external DisplayPort is limited to 2 lanes.
> 
> So enable all 3 remaining DisplayPort controllers and limit their data
> lanes number to 2.
> 
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>

Please do not merge this specific patch.

It is provided just for context and testing purposes.

See the cover note for more details.

> ---
>  arch/arm64/boot/dts/qcom/x1e80100-crd.dts | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
> index 659520404adec33c3551f8d0a5ae3db9e0a18d44..6dc2ebbf6d27fbbf0f224e58cd39ffd33792c6a1 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
> @@ -1125,6 +1125,30 @@ &mdss {
>  	status = "okay";
>  };
>  
> +&mdss_dp0 {
> +	status = "okay";
> +};
> +
> +&mdss_dp0_out {
> +	data-lanes = <0 1>;
> +};
> +
> +&mdss_dp1 {
> +	status = "okay";
> +};
> +
> +&mdss_dp1_out {
> +	data-lanes = <0 1>;
> +};
> +
> +&mdss_dp2 {
> +	status = "okay";
> +};
> +
> +&mdss_dp2_out {
> +	data-lanes = <0 1>;
> +};
> +
>  &mdss_dp3 {
>  	compatible = "qcom,x1e80100-dp";
>  	/delete-property/ #sound-dai-cells;
> 
> -- 
> 2.34.1
>