[PATCH RFC/DO NOT MERGE 08/12] drm/msm/hdmi: Add support for PM OPP table

[Krzysztof Kozlowski]

On 31/08/2026 18:43, Konrad Dybcio wrote:
> On 8/28/26 4:05 PM, Krzysztof Kozlowski wrote:
>> Allow scaling the domain rails with PM OPP, which uses the pixclock
>> ("extp").  This allows proper votes depending on requested HDMI pixel
>> rate.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at oss.qualcomm.com>
>> ---
> 
> [...]
> 
>> -	if (hdmi->extp_clk)
>> +	if (hdmi->extp_clk) {
>>  		clk_disable_unprepare(hdmi->extp_clk);
>> +		dev_pm_opp_set_rate(&hdmi->pdev->dev, 0);
> 
> FWIW rescinding the vote will happen automatically as the device runtime
> suspends. If you think this is necessary, let's do
> 
> dev_pm_opp_set_opp(dev, NULL);
> 
> instead, since dev_pm_opp_set_rate(0) is a ""dark pattern"" that is
> usually misused, see e.g.:
> 
> https://lore.kernel.org/linux-arm-msm/20260728-topic-dpu_power-v1-0-e7783b859a70@oss.qualcomm.com/

Ack

Best regards,
Krzysztof