linux-kernel - Re: [PATCH 3/8] arm64: dts: meson: update leds node on Khadas VIM3/VIM3L board meson-khadas-vim3

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Message-ID: <0467e912-b19e-5389-388b-99b6316d24d8@baylibre.com>
Date:   Fri, 25 Sep 2020 09:39:21 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Artem Lapkin <email2tema@...il.com>
Cc:     khilman@...libre.com, robh+dt@...nel.org, jbrunet@...libre.com,
        martin.blumenstingl@...glemail.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        art@...das.com, nick@...das.com, gouwa@...das.com
Subject: Re: [PATCH 3/8] arm64: dts: meson: update leds node on Khadas
 VIM3/VIM3L board meson-khadas-vim3

Hi,

On 25/09/2020 05:30, Artem Lapkin wrote:
> add aliases names led_white and led_red for white and red leds

Sorry, can you explain why you need these ? They should not be used by the led framework.

> 
> Signed-off-by: Artem Lapkin <art@...das.com>
> ---
>  arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> index 73783692e30..7e137399257 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-khadas-vim3.dtsi
> @@ -12,6 +12,8 @@ / {
>  	aliases {
>  		serial0 = &uart_AO;
>  		ethernet0 = &ethmac;
> +		led_red = &led_red;
> +		led_white = &led_white;

These aliases are not standard aliases.

>  	};
>  
>  	chosen {
> @@ -39,13 +41,13 @@ button-function {
>  	leds {
>  		compatible = "gpio-leds";
>  
> -		led-white {
> +		led_white: led-white {
>  			label = "vim3:white:sys";
>  			gpios = <&gpio_ao GPIOAO_4 GPIO_ACTIVE_HIGH>;
>  			linux,default-trigger = "heartbeat";
>  		};
>  
> -		led-red {
> +		led_red: led-red {
>  			label = "vim3:red";
>  			gpios = <&gpio_expander 5 GPIO_ACTIVE_HIGH>;
>  		};
> 

Instead you should convert these to the new function/color attributes are described in:
Documentation/devicetree/bindings/leds/common.yaml

{
	function = LED_FUNCTION_STATUS;
	color = <LED_COLOR_ID_WHITE>;
}

Neil