linux-kernel - Re: [PATCH v4 1/2] dt-bindings: input: goodix: Add "goodix,no-reset-during-suspend" property

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Date:   Thu, 27 Apr 2023 12:35:29 -0500
From:   Rob Herring <robh@...nel.org>
To:     Fei Shao <fshao@...omium.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        Douglas Anderson <dianders@...omium.org>,
        Jeff LaBundy <jeff@...undy.com>, linux-kernel@...r.kernel.org,
        linux-mediatek <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v4 1/2] dt-bindings: input: goodix: Add
 "goodix,no-reset-during-suspend" property


On Thu, 27 Apr 2023 11:56:55 +0800, Fei Shao wrote:
> We observed that on Chromebook device Steelix, if Goodix GT7375P
> touchscreen is powered in suspend (because, for example, it connects to
> an always-on regulator) and with the reset GPIO asserted, it will
> introduce about 14mW power leakage.
> 
> To address that, we add this property to skip reset during suspend.
> If it's set, the driver will stop asserting the reset GPIO during
> power-down. Refer to the comments in the driver for details.
> 
> Signed-off-by: Fei Shao <fshao@...omium.org>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> Reviewed-by: Jeff LaBundy <jeff@...undy.com>
> ---
> 
> (no changes since v2)
> 
> Changes in v2:
> - Use a more accurate property name and with "goodix," prefix.
> 
>  .../devicetree/bindings/input/goodix,gt7375p.yaml        | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 

Acked-by: Rob Herring <robh@...nel.org>