Re: [PATCH v2 3/3] arm64: dts: qcom: kodiak: Set up 4-lane DP

[Bjorn Andersson <andersson@kernel.org>]

On Wed, Apr 29, 2026 at 12:10:42PM +0530, Mahadevan P wrote:
> From: Mahadevan P <mahap@qti.qualcomm.com>
> 
> Allow up to 4 lanes for the DisplayPort link from the PHY to the

It's hard to follow your thought process here, as you didn't document
why this change should be made. Start your commit message by describing
the problem that your change is solving.

> controller now the mode-switch events can reach the QMP Combo PHY.
> 
> Signed-off-by: Mahadevan P <mahadevan.p@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/kodiak.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> index 0acc6917d7aa..204513a6bd89 100644
> --- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
> +++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> @@ -5704,7 +5704,7 @@ dp_in: endpoint {
>  					port@1 {
>  						reg = <1>;
>  						mdss_dp_out: endpoint {
> -							data-lanes = <0 1>;
> +							data-lanes = <0 1 2 3>;

And as Dmitry pointed out, not all Kodiak-based boards have 4 DP-lanes
wired up.

Regards,
Bjorn

>  							remote-endpoint = <&usb_dp_qmpphy_dp_in>;
>  						};
>  					};
> 
> -- 
> 2.34.1
>