linux-kernel - Re: [PATCH] arm64: dts: freescale: debix-som: Add heartbeat LED

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Message-ID: <20231021140802.4nyyaxclcrqv5n7b@pengutronix.de>
Date:   Sat, 21 Oct 2023 16:08:02 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Kieran Bingham <kieran.bingham@...asonboard.com>
Cc:     devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: freescale: debix-som: Add heartbeat LED

Hi Kieran,

On 23-10-21, Kieran Bingham wrote:
> Map the 'RUN' LED present on the Debix-SOM as a heartbeat.
> 
> Signed-off-by: Kieran Bingham <kieran.bingham@...asonboard.com>
> ---
>  .../dts/freescale/imx8mp-debix-som-a.dtsi     | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> index bc312aa1bfc8..c9a81486da48 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a.dtsi
> @@ -20,6 +20,19 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
>  		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
>  		enable-active-high;
>  	};
> +
> +	gpio-leds {
> +		compatible = "gpio-leds";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_gpio_led>;
> +
> +		status {

according the bindings-doc, this should be:

		'led-status' or 'led-0'

> +			label = "yellow:status";

label is deprecated, instead function and color should be used.

With that fixed feel to add my:

Reviewed-by: Marco Felsch <m.felsch@...gutronix.de>

> +			gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
> +			default-state = "on";
> +			linux,default-trigger = "heartbeat";
> +		};
> +	};
>  };
>  
>  &A53_0 {
> @@ -203,6 +216,12 @@ &wdog1 {
>  };
>  
>  &iomuxc {
> +	pinctrl_gpio_led: gpioledgrp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16		0x19
> +		>;
> +	};
> +
>  	pinctrl_i2c1: i2c1grp {
>  		fsl,pins = <
>  			MX8MP_IOMUXC_I2C1_SCL__I2C1_SCL			0x400001c2
> -- 
> 2.34.1
> 
>