Re: [PATCH 2/2] arm64: dts: qcom: sm6115: Add missing MDSS AHB clock

[Konrad Dybcio]

On 10/24/26 4:27 PM, Michael McAllister wrote:
> The MDSS node is missing DISP_CC_MDSS_AHB_CLK. Although the DPU child
> already requests this clock, MDSS resumes before the child enables it.
> The MDSS hardware-version register can then read as zero, causing
> msm_mdss_enable() to skip UBWC configuration.
> 
> On the Motorola Moto G10 (SM4250), this results in garbled compressed
> scanout after display power cycling. Adding the clock restores the
> UBWC configuration and makes compressed and linear scanout agree.
> 
> Include the DISPCC AHB clock in the MDSS clock list so that its existing
> bulk clock handling enables it before accessing the MDSS registers.
> 
> Fixes: 705e50427d81 ("arm64: dts: qcom: sm6115: Add mdss/dpu node")
> Cc: stable@xxxxxxxxxxxxxxx
> 
> Signed-off-by: Michael McAllister <me@xxxxxxxxxxxxxxxxxxxxx>
> ---


Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad