Re: [PATCH v2 2/3] arm64: dts: qcom: kodiak: move dp data-lanes to SoC dtsi

[Bjorn Andersson]

On Fri, Jun 26, 2026 at 11:50:40PM +0300, Dmitry Baryshkov wrote:
> On Wed, Apr 29, 2026 at 12:10:41PM +0530, Mahadevan P wrote:
> > From: Mahadevan P <mahap@xxxxxxxxxxxxxxxx>
> > 
> > The connection between the QMP Combo PHY and the DisplayPort controller
> > is fixed in SoC, so move the data-lanes property to kodiak.dtsi and
> > drop the per-board overrides.
> > 
> > Also remove the redundant remote-endpoint cross-links and
> > orientation-switch property from qcs6490-rb3gen2 and
> > qcs6490-thundercomm-rubikpi3, which are already defined in kodiak.dtsi.
> 
> Separate commit.
> 
> > 
> > Signed-off-by: Mahadevan P <mahadevan.p@xxxxxxxxxxxxxxxx>
> > ---
> >  arch/arm64/boot/dts/qcom/kodiak.dtsi                          |  1 +
> >  arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts            |  4 ----
> >  arch/arm64/boot/dts/qcom/qcm6490-particle-tachyon.dts         |  4 ----
> >  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts                  | 11 -----------
> >  arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts |  1 -
> >  arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts     |  3 ---
> >  arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi                |  1 -
> >  7 files changed, 1 insertion(+), 24 deletions(-)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> > index 96ac3656ab5a..0acc6917d7aa 100644
> > --- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> > @@ -5704,6 +5704,7 @@ dp_in: endpoint {
> >  					port@1 {
> >  						reg = <1>;
> >  						mdss_dp_out: endpoint {
> > +							data-lanes = <0 1>;
> 
> This is not true. The SoC has 4 lanes going from the DP controller to
> the QMP PHY.
> 

Does this property really denote the number of lanes and mapping the
internal pipe between DP TX and PHY? Doesn't it tell how the external
mapping looks like?

Regards,
Bjorn

> >  							remote-endpoint = <&usb_dp_qmpphy_dp_in>;
> >  						};
> >  					};
> 
> -- 
> With best wishes
> Dmitry