linux-kernel - Re: [PATCH v2 5/7] arm64: dts: qcom-sm8550: allow 4 lanes for DisplayPort and enable QMP PHY mode-switch

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Date: Mon, 27 May 2024 12:03:31 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Vinod Koul <vkoul@...nel.org>, 
	Kishon Vijay Abraham I <kishon@...nel.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 <konrad.dybcio@...aro.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/7] arm64: dts: qcom-sm8550: allow 4 lanes for
 DisplayPort and enable QMP PHY mode-switch

On Mon, May 27, 2024 at 10:42:37AM +0200, Neil Armstrong wrote:
> Allow up to 4 lanes for the DisplayPort link from the PHY to the Controller
> and allow mode-switch events to the QMP Combo PHY.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm8550-hdk.dts | 3 ++-
>  arch/arm64/boot/dts/qcom/sm8550-qrd.dts | 3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550-hdk.dts b/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
> index ccff744dcd14..a95949c01f25 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8550-hdk.dts
> @@ -941,7 +941,7 @@ &mdss_dp0 {
>  
>  &mdss_dp0_out {
>  	remote-endpoint = <&usb_dp_qmpphy_dp_in>;
> -	data-lanes = <0 1>;
> +	data-lanes = <0 1 2 3>;
>  };
>  
>  &pcie0 {
> @@ -1280,6 +1280,7 @@ &usb_dp_qmpphy {
>  	vdda-phy-supply = <&vreg_l3e_1p2>;
>  	vdda-pll-supply = <&vreg_l3f_0p88>;
>  
> +	mode-switch;
>  	orientation-switch;

Please rebase on top of https://lore.kernel.org/linux-arm-msm/20240429-usb-link-dtsi-v1-0-87c341b55cdf@linaro.org/

After that:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>


>  
>  	status = "okay";
> diff --git a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> index 39ba3e9969b7..fbac5270b4d7 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> @@ -795,7 +795,7 @@ &mdss_dp0 {
>  };
>  
>  &mdss_dp0_out {
> -	data-lanes = <0 1>;
> +	data-lanes = <0 1 2 3>;
>  	remote-endpoint = <&usb_dp_qmpphy_dp_in>;
>  };
>  
> @@ -1142,6 +1142,7 @@ &usb_dp_qmpphy {
>  	vdda-phy-supply = <&vreg_l3e_1p2>;
>  	vdda-pll-supply = <&vreg_l3f_0p88>;
>  
> +	mode-switch;
>  	orientation-switch;
>  
>  	status = "okay";
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry