linux-kernel - Re: [PATCH v3] arm64: dts: qcom: qcm6490-idp: enable PMIC Volume and Power buttons

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Message-ID: <7ac26eb7-2442-4578-9fa8-e1bb59756e6e@linaro.org>
Date: Sat, 2 Mar 2024 00:39:31 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: quic_huliu@...cinc.com, Bjorn Andersson <andersson@...nel.org>,
 Rob Herring <robh@...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 v3] arm64: dts: qcom: qcm6490-idp: enable PMIC Volume and
 Power buttons

On 1.03.2024 08:16, Hui Liu via B4 Relay wrote:
> From: Hui Liu <quic_huliu@...cinc.com>
> 
> 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: Hui Liu <quic_huliu@...cinc.com>
> ---
> Changes in v3:
> - Update the commit more concise and explicit.
> - remove "power-source" property and update the numeric value to defined
> name for "qcom,drive-strength".
> - Link to v2: https://lore.kernel.org/r/20240223-gpio-keys-v2-1-19f48b3d8762@quicinc.com
> 
> Changes in v2:
> - Update the commit description.
> - Link to v1: https://lore.kernel.org/r/20240206-gpio-keys-v1-1-7683799daf8d@quicinc.com
> ---
>  arch/arm64/boot/dts/qcom/qcm6490-idp.dts | 43 ++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
> index acf145d1d97c..cf8f6d48bfc2 100644
> --- a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
> @@ -9,7 +9,9 @@
>  #define PM7250B_SID 8
>  #define PM7250B_SID1 9
>  
> +#include <dt-bindings/input/linux-event-codes.h>
>  #include <dt-bindings/leds/common.h>
> +#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>  #include "sc7280.dtsi"
>  #include "pm7250b.dtsi"
> @@ -39,6 +41,24 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +		label = "gpio-keys";
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&key_vol_up_default>;

These are backwards

> +
> +		key-volume-up {
> +			label = "volume_up";

"Volume Up"?

> +			gpios = <&pm7325_gpios 6 GPIO_ACTIVE_LOW>;
> +			linux,input-type = <1>;


Documentation/devicetree/bindings/input/gpio-keys.yaml:
linux,input-type:
        default: 1  # EV_KEY

Konrad