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SubjectRe: [PATCH v2] PM: domains: Prevent power off for parent unless child is in deepest state
From
04.02.2022 13:16, Ulf Hansson пишет:
> A PM domain managed by genpd may support multiple idlestates. During
> genpd_power_off() a genpd governor may be asked to select one of the
> idlestates based upon the dev PM QoS constraints, for example.
>
> However, there is a problem with the behaviour around this in genpd. More
> precisely, a parent-domain is allowed to be powered off, no matter of what
> idlestate that has been selected for the child-domain.
>
> So far, we have not received any reports about errors from the current
> behaviour. However, there is an STMicro platform that is being worked on,
> which can't cope with this.

Could you please provide some technical info about why STMicro platform
can't cope with that?

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