[PATCH 2/5] dt-bindings: display/msm: Document the DPU for QCS8300

[Dmitry Baryshkov]

On Fri, 29 Nov 2024 at 11:51, Yongxing Mou <quic_yongmou at quicinc.com> wrote:
>
>
>
> On 2024/11/27 21:56, Dmitry Baryshkov wrote:
> > On Wed, Nov 27, 2024 at 03:05:02PM +0800, Yongxing Mou wrote:
> >> Document the DPU for Qualcomm QCS8300 platform.
> >>
> >> Signed-off-by: Yongxing Mou <quic_yongmou at quicinc.com>
> >> ---
> >>   Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml | 1 +
> >>   1 file changed, 1 insertion(+)
> >>
> >> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
> >> index 01cf79bd754b491349c52c5aef49ba06e835d0bf..631181df2bcf2752679be4de0dee74e15e2c66c2 100644
> >> --- a/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
> >> +++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8650-dpu.yaml
> >> @@ -14,6 +14,7 @@ $ref: /schemas/display/msm/dpu-common.yaml#
> >>   properties:
> >>     compatible:
> >>       enum:
> >> +      - qcom,qcs8300-dpu
> >
> > The DPU is the same as the one on SA8775P. Drop it completely.
> Thanks,got it.The DPU of qcs8300 and sa8775p are exactly the same, but
> sa8775p has two DPUs, while qcs8300 has only one DPU and has removed
> intf2, intf4, and intf8. That's their difference.Can qcs8300 reuse
> sa8775p's dpu driver? if we can reuse it,will drop this patch.

Are INTF_n blocks implemented in silicon or not? What happens if one
reads one of INTF_2 or INTF_4 registers?
If they are actually RAZ or cause data aborts, you can not reuse
SA8775P catalog entry. Please add corresponding data structures to
dpu_8_4_sa8775p.h.

>
> >
> >>         - qcom,sa8775p-dpu
> >>         - qcom,sm8650-dpu
> >>         - qcom,x1e80100-dpu
> >>
> >> --
> >> 2.34.1
> >>
> >
>


-- 
With best wishes
Dmitry