Re: [PATCH] arm64: dts: qcom: enable dual ("bonded") DSI mode for DB845c

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 4.05.2023 18:04, Dmitry Baryshkov wrote:
> Now as both lt9611 and drm/msm drivers were updated to handle the 4k
> modes over DSI, enable "bonded" DSI mode on DB845c. This way the board
> utilizes both DSI links and thus can support 4k on the HDMI output.
> 
> Cc: Amit Pundir <amit.pundir@linaro.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
>  arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 36 ++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> index e14fe9bbb386..4dea2c04b22f 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> @@ -419,6 +419,9 @@ &dsi0 {
>  	status = "okay";
P.S. wanna move status last by chance?

Konrad
>  	vdda-supply = <&vreg_l26a_1p2>;
>  
> +	qcom,dual-dsi-mode;
> +	qcom,master-dsi;
> +
>  	ports {
>  		port@1 {
>  			endpoint {
> @@ -434,6 +437,31 @@ &dsi0_phy {
>  	vdds-supply = <&vreg_l1a_0p875>;
>  };
>  
> +&dsi1 {
> +	vdda-supply = <&vreg_l26a_1p2>;
> +
> +	qcom,dual-dsi-mode;
> +
> +	/* DSI1 is slave, so use DSI0 clocks */
> +	assigned-clock-parents = <&dsi0_phy 0>, <&dsi0_phy 1>;
> +
> +	status = "okay";
> +
> +	ports {
> +		port@1 {
> +			endpoint {
> +				remote-endpoint = <&lt9611_b>;
> +				data-lanes = <0 1 2 3>;
> +			};
> +		};
> +	};
> +};
> +
> +&dsi1_phy {
> +	vdds-supply = <&vreg_l1a_0p875>;
> +	status = "okay";
> +};
> +
>  &gcc {
>  	protected-clocks = <GCC_QSPI_CORE_CLK>,
>  			   <GCC_QSPI_CORE_CLK_SRC>,
> @@ -493,6 +521,14 @@ lt9611_a: endpoint {
>  				};
>  			};
>  
> +			port@1 {
> +				reg = <1>;
> +
> +				lt9611_b: endpoint {
> +					remote-endpoint = <&dsi1_out>;
> +				};
> +			};
> +
>  			port@2 {
>  				reg = <2>;
>