linux-kernel - Re: [v3] drm/bridge: ti-sn65dsi86: ensure bridge suspend happens during PM sleep

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Message-ID: <159186939329.242598.2996575539576077899@swboyd.mtv.corp.google.com>
Date:   Thu, 11 Jun 2020 02:56:33 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Harigovindan P <harigovi@...eaurora.org>,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org
Cc:     Harigovindan P <harigovi@...eaurora.org>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        seanpaul@...omium.org, hoegsberg@...omium.org,
        kalyan_t@...eaurora.org, nganji@...eaurora.org, sam@...nborg.org
Subject: Re: [v3] drm/bridge: ti-sn65dsi86: ensure bridge suspend happens during PM sleep

Quoting Harigovindan P (2020-06-09 05:04:55)
> ti-sn65dsi86 bridge is enumerated as a runtime device. When
> suspend is triggered, PM core adds a refcount on all the
> devices and calls device suspend, since usage count is
> already incremented, runtime suspend will not be called
> and it kept the bridge regulators and gpios ON which resulted
> in platform not entering into XO shutdown.
> 
> Add changes to force suspend on the runtime device during pm sleep.
> 
> Signed-off-by: Harigovindan P <harigovi@...eaurora.org>
> ---

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