[PATCH] dt-bindings: display/msm: qcom,mdp5: drop lut clock

[Dmitry Baryshkov]

On Tue, Aug 12, 2025 at 12:27:14PM +0200, Konrad Dybcio wrote:
> On 8/9/25 10:36 AM, Dmitry Baryshkov wrote:
> > None of MDP5 platforms have a LUT clock on the display-controller, it
> 
> 8974 and friends seem to bind it to the GDSC
> 
> although on msm-3.4:
> 
> arch/arm/mach-msm/clock-8974.c
> 4197:static struct branch_clk mdss_mdp_lut_clk = {
> 4203:           .dbg_name = "mdss_mdp_lut_clk",
> 4205:           CLK_INIT(mdss_mdp_lut_clk.c),
> 4609:   {&mdss_mdp_lut_clk.c,                   MMSS_BASE, 0x0015},
> 5118:   CLK_LOOKUP("lut_clk", mdss_mdp_lut_clk.c, "mdp.0"),
> 5387:   CLK_LOOKUP("lut_clk", mdss_mdp_lut_clk.c, "fd8c2304.qcom,gdsc"

At least it's not used on upstream (nor could I find relevant docs in
the HPG).

> 
> Konrad
> 
> > was added by the mistake. Drop it, fixing DT warnings on MSM8976 /
> > MSM8956 platforms. Technically it's an ABI break, but no other platforms
> > are affected.
> > 
> > Fixes: 385c8ac763b3 ("dt-bindings: display/msm: convert MDP5 schema to YAML format")
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>
> > ---
> >  Documentation/devicetree/bindings/display/msm/qcom,mdp5.yaml | 1 -
> >  1 file changed, 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/display/msm/qcom,mdp5.yaml b/Documentation/devicetree/bindings/display/msm/qcom,mdp5.yaml
> > index e153f8d26e7aaec64656570bbec700794651c10f..2735c78b0b67af8c004350f40ca9700c563b75f8 100644
> > --- a/Documentation/devicetree/bindings/display/msm/qcom,mdp5.yaml
> > +++ b/Documentation/devicetree/bindings/display/msm/qcom,mdp5.yaml
> > @@ -60,7 +60,6 @@ properties:
> >            - const: bus
> >            - const: core
> >            - const: vsync
> > -          - const: lut
> >            - const: tbu
> >            - const: tbu_rt
> >          # MSM8996 has additional iommu clock
> > 
> > ---
> > base-commit: a933d3dc1968fcfb0ab72879ec304b1971ed1b9a
> > change-id: 20250809-msm8976-no-lut-4b5100bcfb35
> > 
> > Best regards,

-- 
With best wishes
Dmitry