On Fri, Sep 05, 2025 at 10:50:33AM +0800, Yongxing Mou wrote: > > > On 9/4/2025 9:43 PM, Dmitry Baryshkov wrote: > > On Thu, Sep 04, 2025 at 03:22:37PM +0800, Yongxing Mou wrote: > > > Add compatible string for the DisplayPort controller found on the > > > Qualcomm QCS8300 SoC. > > > > > > The Qualcomm QCS8300 platform comes with one DisplayPort controller > > > that supports 4 MST streams. > > > > > > Signed-off-by: Yongxing Mou <[email protected]> > > > --- > > > .../bindings/display/msm/dp-controller.yaml | 22 > > > ++++++++++++++++++++++ > > > 1 file changed, 22 insertions(+) > > > > > > diff --git > > > a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml > > > b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml > > > index > > > aeb4e4f36044a0ff1e78ad47b867e232b21df509..ad08fd11588c45698f7e63ecc3218a749fc8ca67 > > > 100644 > > > --- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml > > > +++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml > > > @@ -18,6 +18,7 @@ properties: > > > compatible: > > > oneOf: > > > - enum: > > > + - qcom,qcs8300-dp > > > > Can we use fallback to qcom,sa8775p-dp instead of declaring a completely > > new one? > > > I think we can not use fallback to sa8775p, since we don't have DP1 > controller for QCS8300. SA8775P actually have 4 DP controllers (now only 2 > really used). So in the hardware, i think it is different with SA8775P and > we need a new one.>> - qcom,sa8775p-dp
I don't understand how this rationale explains what Dmitry asked. Why number of IP blocks (and this is DPx, right?) matter? Are you sure you understand what compatibility means? Please read the slides from OSSE25 or just read writing bindings. Best regards, Krzysztof
