linux-kernel - Re: [PATCH 4/4] arm64: dts: qcom: sm8550-qrd: enable PMIC Volume and Power buttons

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Message-ID: <be3f426e-6831-9efd-19c3-1b679cc3ea7e@linaro.org>
Date:   Fri, 26 May 2023 21:53:06 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] arm64: dts: qcom: sm8550-qrd: enable PMIC Volume and
 Power buttons



On 25.05.2023 17:47, Neil Armstrong wrote:
> The Volume Down & Power buttons are controlled by the PMIC via
> the PON hardware, and the Volume Up is connected to a PMIC gpio.
> 
> Enable the necessary hardware and setup the GPIO state for the
> Volume Up gpio key.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm8550-qrd.dts | 36 +++++++++++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> index b08a8201ad23..c354dcc12621 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8550-qrd.dts
> @@ -28,6 +28,22 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&volume_up_n>;
property-n
property-names

> +
> +		key-volume-up {
> +			label = "Volume Up";
> +			linux,code = <KEY_VOLUMEUP>;
> +			gpios = <&pm8550_gpios 6 GPIO_ACTIVE_LOW>;
> +			debounce-interval = <15>;
> +			linux,can-disable;
> +			wakeup-source;
> +		};
> +	};
> +
>  	pmic-glink {
>  		compatible = "qcom,sm8550-pmic-glink", "qcom,pmic-glink";
>  		#address-cells = <1>;
> @@ -426,6 +442,16 @@ &pcie0_phy {
>  	status = "okay";
>  };
>  
> +&pon_pwrkey {
> +	status = "okay";
> +};
> +
> +&pon_resin {
Not alphabetically ordered

Konrad
> +	linux,code = <KEY_VOLUMEDOWN>;
> +
> +	status = "okay";
> +};
> +
>  &pm8550_flash {
>  	status = "okay";
>  
> @@ -450,6 +476,16 @@ led-1 {
>  	};
>  };
>  
> +&pm8550_gpios {
> +	volume_up_n: volume-up-n-state {
> +		pins = "gpio6";
> +		function = "normal";
> +		power-source = <1>;
> +		bias-pull-up;
> +		input-enable;
> +	};
> +};
> +
>  &pm8550_pwm {
>  	status = "okay";
>  
>