linux-kernel - Re: [PATCH v3 2/9] dt: bindings: Add multicolor class dt bindings documention

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Date:   Fri, 14 Jun 2019 11:00:11 -0600
From:   Rob Herring <robh@...nel.org>
To:     Dan Murphy <dmurphy@...com>
Cc:     jacek.anaszewski@...il.com, pavel@....cz,
        devicetree@...r.kernel.org, linux-leds@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/9] dt: bindings: Add multicolor class dt bindings
 documention

On Thu, May 23, 2019 at 02:08:13PM -0500, Dan Murphy wrote:
> Add DT bindings for the LEDs multicolor class framework.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>
> ---
>  .../bindings/leds/leds-class-multicolor.txt   | 97 +++++++++++++++++++
>  1 file changed, 97 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/leds-class-multicolor.txt
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-class-multicolor.txt b/Documentation/devicetree/bindings/leds/leds-class-multicolor.txt
> new file mode 100644
> index 000000000000..e2a2ce3279cb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-class-multicolor.txt
> @@ -0,0 +1,97 @@
> +* Multicolor LED properties
> +
> +Multicolor LEDs can consist of a RGB, RGBW or a RGBA LED clusters.  These devices
> +can be grouped together and also provide a modeling mechanism so that the
> +cluster LEDs can vary in hue and intensity to produce a wide range of colors.
> +
> +The nodes and properties defined in this document are unique to the multicolor
> +LED class.  Common LED nodes and properties are inherited from the common.txt
> +within this documentation directory.
> +
> +Required LED Child properties:
> +	- color : For multicolor LED support this property should be defined as
> +		  LED_COLOR_ID_MULTI and further definition can be found in
> +		  include/linux/leds/common.h.
> +
> +led-controller@30 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	compatible = "ti,lp5024";
> +	reg = <0x29>;
> +
> +	multi-led@4 {

Typically we sort by address order.

> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = <4>;
> +		color = <LED_COLOR_ID_MULTI>;
> +		function = LED_FUNCTION_ACTIVITY;
> +
> +		led@12 {
> +			reg = <12>;
> +			color = <LED_COLOR_ID_RED>;
> +		};
> +
> +		led@13 {
> +			reg = <13>;
> +			color = <LED_COLOR_ID_GREEN>;
> +		};
> +
> +		led@14 {
> +			reg = <14>;
> +			color = <LED_COLOR_ID_BLUE>;
> +		};
> +	};
> +
> +	/* Only support RGB no model defined */

I don't understand this comment.

> +	multi-led@1 {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		reg = <1>;
> +		color = <LED_COLOR_ID_MULTI>;
> +		function = LED_FUNCTION_;

??

> +
> +
> +		led@3 {
> +			reg = <3>;
> +			color = <LED_COLOR_ID_RED>;
> +		};
> +
> +		led@4 {
> +			reg = <4>;
> +			color = <LED_COLOR_ID_GREEN>;
> +		};
> +
> +		led@5 {
> +			reg = <5>;
> +			color = <LED_COLOR_ID_BLUE>;
> +		};
> +	};
> +
> +	multi-led@2 {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		color = <LED_COLOR_ID_MULTI>;
> +		function = LED_FUNCTION_ACTIVITY;
> +		reg = <2>;
> +		ti,led-bank = <2 3 5>;
> +
> +		led@6 {
> +			reg = <0x6>;
> +			color = <LED_COLOR_ID_RED>;
> +			led-sources = <6 9 15>;
> +		};
> +
> +		led@7 {
> +			reg = <0x7>;
> +			color = <LED_COLOR_ID_GREEN>;
> +			led-sources = <7 10 16>;
> +		};
> +
> +		led@8 {
> +			reg = <0x8>;
> +			color = <LED_COLOR_ID_BLUE>;
> +			led-sources = <8 11 17>;
> +		};
> +	};
> +
> +};
> -- 
> 2.21.0.5.gaeb582a983
>