linux-kernel - Re: [PATCH V4 1/2] arm64: dts: qcom: ipq5332: enable GPIO based LEDs and Buttons

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Message-ID: <55446d48-bc6d-1d7b-1580-0b9dc7323a21@linaro.org>
Date:   Sat, 15 Jul 2023 16:16:28 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Sridharan S N <quic_sridsn@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V4 1/2] arm64: dts: qcom: ipq5332: enable GPIO based LEDs
 and Buttons

On 16.06.2023 10:32, Sridharan S N wrote:
> Add support for wlan-2g LED on GPIO 36 and wps buttons on GPIO 35.
> 
> Signed-off-by: Sridharan S N <quic_sridsn@...cinc.com>
> ---
> Changes in V4:
> 	- Added patch dependency. This change depends on below patch set
> 	  https://lore.kernel.org/linux-arm-msm/20230615090001.10970-1-quic_sridsn@quicinc.com/
> 
> Changes in V3:
> 	- Updated patch series title. Mentioned platform in series
> 	  title
> 
> Changes in V2:
> 	- Used the hypen in node name instead of underscore
> 	- Dropped the status property
> 
>  .../boot/dts/qcom/ipq5332-rdp-common.dtsi     | 39 +++++++++++++++++++
>  1 file changed, 39 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi b/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
> index 97dc0e5c15f0..a8671a4ac2e4 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332-rdp-common.dtsi
> @@ -19,6 +19,31 @@
>  	chosen {
>  		stdout-path = "serial0";
>  	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +		pinctrl-0 = <&gpio_keys_default>;
> +		pinctrl-names = "default";
> +
> +		button-wps {
> +			label = "wps";
> +			linux,code = <KEY_WPS_BUTTON>;
> +			gpios = <&tlmm 35 GPIO_ACTIVE_LOW>;
> +			debounce-interval = <60>;
That's purely your choice, but don't you wanna make it wakeup-capable?

Otherwise:

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
> +		};
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		pinctrl-0 = <&gpio_leds_default>;
> +		pinctrl-names = "default";
> +
> +		led-0 {
> +			gpios = <&tlmm 36 GPIO_ACTIVE_HIGH>;
> +			linux,default-trigger = "phy0tx";
> +			default-state = "off";
> +		};
> +	};
>  };
>  
>  &blsp1_i2c1 {
> @@ -52,6 +77,20 @@
>  /* PINCTRL */
>  
>  &tlmm {
> +	gpio_keys_default: gpio-keys-default-state {
> +		pins = "gpio35";
> +		function = "gpio";
> +		drive-strength = <8>;
> +		bias-pull-up;
> +	};
> +
> +	gpio_leds_default: gpio-leds-default-state {
> +		pins = "gpio36";
> +		function = "gpio";
> +		drive-strength = <8>;
> +		bias-pull-down;
> +	};
> +
>  	i2c_1_pins: i2c-1-state {
>  		pins = "gpio29", "gpio30";
>  		function = "blsp1_i2c0";