linux-kernel - Re: [PATCH 1/5] arm64: dts: qcom: r0q: add gpio keys

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Message-ID: <qiiuezocvxvj5bhrr77v6o2amaaaepdx54pqoewvhtnxce5ccz@g7bhkrb6a4pd>
Date: Sat, 20 Sep 2025 18:45:27 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Eric Gonçalves <ghatto404@...il.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] arm64: dts: qcom: r0q: add gpio keys

On Sat, Sep 20, 2025 at 01:46:33AM +0000, Eric Gonçalves wrote:
> Add GPIO keys support to Samsung Galaxy S22 (r0q).
> 
> Signed-off-by: Eric Gonçalves <ghatto404@...il.com>
> ---
>  .../boot/dts/qcom/sm8450-samsung-r0q.dts      | 53 +++++++++++++++----
>  1 file changed, 44 insertions(+), 9 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
> index 880d74ae6032..70e953824996 100644
> --- a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
> @@ -2,11 +2,12 @@
>  
>  /dts-v1/;
>  
> +#include <dt-bindings/input/linux-event-codes.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> -
>  #include "sm8450.dtsi"
>  #include "pm8350.dtsi"
>  #include "pm8350c.dtsi"
> +#include "pmk8350.dtsi"
>  
>  / {
>  	model = "Samsung Galaxy S22 5G";
> @@ -28,13 +29,19 @@ framebuffer: framebuffer@...00000 {
>  		};
>  	};
>  
> -	vph_pwr: regulator-vph-pwr {
> -		compatible = "regulator-fixed";
> -		regulator-name = "vph_pwr";
> -		regulator-min-microvolt = <3700000>;
> -		regulator-max-microvolt = <3700000>;
> -		regulator-always-on;
> -		regulator-boot-on;

Please don't mix up refactorings and new features. Split this patch into
several.

> +	gpio-keys {
> +		compatible = "gpio-keys";
> +		autorepeat;
> +
> +		pinctrl-0 = <&vol_up_n>;
> +		pinctrl-names = "default";
> +
> +		key-vol-up {
> +			label = "Volume Up";
> +			linux,code = <KEY_VOLUMEUP>;
> +			gpios = <&pm8350_gpios 6 GPIO_ACTIVE_LOW>;
> +			debounce-interval = <15>;
> +		};
>  	};
>  
>  	reserved-memory {
> @@ -47,6 +54,15 @@ splash-region@...00000 {
>  			no-map;
>  		};
>  	};
> +
> +	vph_pwr: regulator-vph-pwr {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vph_pwr";
> +		regulator-min-microvolt = <3700000>;
> +		regulator-max-microvolt = <3700000>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
>  };
>  
>  &apps_rsc {
> @@ -119,8 +135,27 @@ vreg_l1c_1p8: ldo1 {
>  	};
>  };
>  
> +&pm8350_gpios {
> +	vol_up_n: vol-up-n-state {
> +		pins = "gpio6";
> +		function = "normal";
> +		power-source = <1>;
> +		input-enable;
> +	};
> +};
> +
> +&pon_pwrkey {
> +	status = "okay";
> +};
> +
> +&pon_resin {
> +	linux,code = <KEY_VOLUMEDOWN>;
> +
> +	status = "okay";
> +};
> +
>  &tlmm {
> -	gpio-reserved-ranges = <36 4>; /* SPI (not linked to anything) */
> +	gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
>  };
>  
>  &usb_1 {
> -- 
> 2.51.0
> 

-- 
With best wishes
Dmitry