linux-kernel - Re: [PATCH V5 1/1] soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ

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Message-ID: <CAE-0n51kCczyefN0r7Wb4TRa1mUWiCdkRqfooDdfnyD_jUq8PA@mail.gmail.com>
Date:   Tue, 21 Sep 2021 10:27:17 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Deepak Kumar Singh <deesin@...eaurora.org>,
        bjorn.andersson@...aro.org, clew@...eaurora.org,
        sibis@...eaurora.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, Andy Gross <agross@...nel.org>
Subject: Re: [PATCH V5 1/1] soc: qcom: smp2p: Add wakeup capability to SMP2P IRQ

Quoting Deepak Kumar Singh (2021-09-21 03:34:27)
> Remote susbsystems notify fatal crash throught smp2p interrupt.
> When remoteproc crashes it can cause soc to come out of low power
> state and may not allow again to enter in low power state until
> crash is handled.
>
> Mark smp2p interrupt wakeup capable so that interrupt handler is
> executed and remoteproc crash can be handled in system  resume path.
> This patch marks interrupt wakeup capable but keeps wakeup disabled
> by default. User space can enable it based on its requirement for
> wakeup from suspend.
>
> Signed-off-by: Deepak Kumar Singh <deesin@...eaurora.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>