linux-kernel - Re: [PATCH] tty: serial: qcom-geni-serial: Drop the icc bw votes in suspend for console

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Message-ID: <77c0899c-ab9a-e195-cc53-5f9bf340ab0e@codeaurora.org>
Date:   Thu, 9 Jul 2020 19:51:06 +0530
From:   Akash Asthana <akashast@...eaurora.org>
To:     Rajendra Nayak <rnayak@...eaurora.org>, bjorn.andersson@...aro.org,
        agross@...nel.org, gregkh@...uxfoundation.org,
        georgi.djakov@...aro.org
Cc:     mka@...omium.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        dianders@...omium.org, swboyd@...omium.org
Subject: Re: [PATCH] tty: serial: qcom-geni-serial: Drop the icc bw votes in
 suspend for console


On 7/9/2020 3:07 PM, Rajendra Nayak wrote:
> When using the geni-serial as console, its important to be
> able to hit the lowest possible power state in suspend,
> even with no_console_suspend.
> The only thing that prevents it today on platforms like the sc7180
> is the interconnect BW votes, which we certainly don't need when
> the system is in suspend. So in the suspend handler mark them as
> ACTIVE_ONLY (0x3) and on resume switch them back to the ALWAYS tag (0x7)
Reviewed-by: Akash Asthana <akashast@...eaurora.org>

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