Re: [PATCH 07/11] drm/vc4: hdmi: Disable connector status polling during suspend

Stefan Wahren
2024-07-04T16:25:41Z

Hi Peter,

Am 02.07.24 um 22:02 schrieb Peter Robinson:
> Hi Stefan,
>
>> Suspend of VC4 HDMI will likely triggers a warning from
>> vc4_hdmi_connector_detect_ctx() during poll of connector status.
>> The power management will prevent the resume and keep the relevant
>> power domain disabled.
>>
>> Since there is no reason to poll the connector status during
>> suspend, the polling should be disabled during this.
> What about HDMI-CEC? I don't know well enough how CEC integrates at
> this level but CEC can wake up the device over HDMI from a TV display
> for example so if this affects that, while it's maybe not required for
> first pass, I know the rpi is used in a lot of media use cases so the
> ability to wake up via CEC would certainly be welcomed.
unfortunately i don't know much about HDMI-CEC, too. The only thing I
noticed was that I currently cannot configure vc4 as a wakeup source.