Re: [PATCH 1/3] dt-bindings: display: msm: Allow two MDSS power domains

Konrad Dybcio <[email protected]>
Newsgroups org.freedesktop.lists.dri-devel,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID <[email protected]> 
On 8/13/26 9:44 AM, Yongxing Mou wrote:
> 
> 
> On 7/20/2026 4:49 PM, Konrad Dybcio wrote:
>> On 7/20/26 10:43 AM, Yongxing Mou wrote:
>>> Kaanapali (SM8750) and Glymur use two display power domains.
>>> CORE_GDSC powers the main display hardware while INT2_GDSC
>>> powers a subset of SSPP blocks.
>>
>> Can they operate independently? Does INT2_GDSC need to be
>> powered on after CORE_GDSC?
>>
> On Kaanapali, my understanding is that CORE_GDSC and INT2_GDSC should generally track the same state, except that INT2_GDSC may be powered down when SSPP1 (VIG2/VIG3/DMA5) is unused.

Is the MDSS any useful if *only* INT2_GDSC is enabled? Can the INT2_GDSC
be enabled itself if CORE_GDSC is off?

Konrad
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