linux-kernel - Re: [PATCH 2/3] dt-bindings: leds: Shiji Lighting APA102C LED driver

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Date:   Tue, 18 Feb 2020 21:28:48 +0100
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Nicolas Belin <nbelin@...libre.com>, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org, pavel@....cz, dmurphy@...com
Subject: Re: [PATCH 2/3] dt-bindings: leds: Shiji Lighting APA102C LED driver

Hi Nicolas,

Thank you for the patch set.

On 2/18/20 10:37 AM, Nicolas Belin wrote:
> Document Shiji Lighting APA102C LED driver device tree bindings.
> 
> Signed-off-by: Nicolas Belin <nbelin@...libre.com>
> ---
>  .../devicetree/bindings/leds/leds-apa102c.yaml     | 91 ++++++++++++++++++++++
>  1 file changed, 91 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/leds-apa102c.yaml
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-apa102c.yaml b/Documentation/devicetree/bindings/leds/leds-apa102c.yaml
> new file mode 100644
> index 000000000000..24bc2fc19fcb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-apa102c.yaml
> @@ -0,0 +1,91 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/leds-apa102c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LED driver for Shiji Lighting - APA102C
> +
> +maintainers:
> +  - Nicolas Belin <nbelin@...libre.com>
> +
> +description:
> +  Each LED is represented as a sub-node of the leds-apa102c device.  Each LED
> +  is a three color RGB LED with 32 levels brightness adjustment that can be
> +  cascaded so that multiple LEDs can be set with a single command.
> +
> +properties:
> +  compatible:
> +    const: shiji,apa102c
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    maximum: 1000000
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - spi-max-frequency
> +  - '#address-cells'
> +  - '#size-cells'
> +
> +patternProperties:
> +  "^led@[0-9]+$":
> +    type: object
> +    description: |
> +      Properties for an array of connected LEDs.
> +
> +    properties:
> +      reg:
> +        description: |
> +          This property corresponds to the led index. It has to be between 0
> +          and the number of managed leds minus 1
> +        maxItems: 1
> +
> +      label:

label property has been deprecated, please refer to common LED bindings
[0] and use function and color properties instead.

> +        description: |
> +          This property corresponds to the name of the led. If not set,
> +          the led index will be used to create the led name instead
> +        maxItems: 1
> +
> +      linux,default-trigger: true
> +
> +    required:
> +      - reg
> +
> +examples:
> +  - |
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        led-controller@0 {
> +            compatible = "shiji,apa102c";
> +            reg = <0>;
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +            spi-max-frequency = <1000000>;
> +            led@0 {
> +                reg = <0>;
> +                label = "led1";
> +            };
> +
> +            led@1 {
> +                reg = <1>;
> +                label = "led2";
> +            };
> +
> +            led@2 {
> +                reg = <2>;
> +                label = "led3";
> +            };
> +        };
> +    };
> 

[0] Documentation/devicetree/bindings/leds/common.txt

-- 
Best regards,
Jacek Anaszewski