linux-kernel - Re: [PATCH] arm64: dts: qcom: sc8280xp-crd: add support for volume-up key

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Message-ID: <2aac1aff-694f-41f6-8849-f1dfe802a1f4@oss.qualcomm.com>
Date: Sat, 8 Mar 2025 17:26:26 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Johan Hovold <johan+linaro@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp-crd: add support for volume-up
 key

On 7.03.2025 6:10 PM, Johan Hovold wrote:
> Add support for the keypad volume-up key on the debug extension board.
> 
> This is useful to have when testing PMIC interrupt handling, and the key
> can also be used to wake up from deep suspend states (CX shutdown).
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>

I'm lukewarm about this since there is no "actual" button for that.
Does the power button not work here?

If systemd induces a shutdown, try setting

HandlePowerKey=ignore

in /etc/systemd/logind.conf

Konrad