linux-kernel - Re: [PATCH] dt-bindings: leds: lp50xx: fix LED children names

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Date:   Mon, 18 Jul 2022 09:18:07 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Pavel Machek <pavel@....cz>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Dan Murphy <dmurphy@...com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: leds: lp50xx: fix LED children names

On Fri, Jun 24, 2022 at 5:13 AM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> The lp50xx LEDs expects to have single-color LED children with unit
> addresses.  This is required by the driver and provided by existing
> DTSes.  Fix the binding to match actual usage.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Fixes: dce1452301e7 ("dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers")
> ---
>  Documentation/devicetree/bindings/leds/leds-lp50xx.yaml | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml b/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
> index f12fe5b53f30..c274a10bbde6 100644
> --- a/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
> +++ b/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
> @@ -65,8 +65,14 @@ patternProperties:
>            for the child node.  The LED modules can either be used stand alone
>            or grouped into a module bank.
>
> +      '#address-cells':
> +        const: 1
> +
> +      '#size-cells':
> +        const: 0
> +
>      patternProperties:
> -      "(^led-[0-9a-f]$|led)":
> +      "^led@[0-9a-f]+$":

Looks like you forgot to update the example. Now failing with
'unevaluatedProperties' fixed:

/builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.example.dtb:
led-controller@14: multi-led@1: Unevaluated properties are not allowed
('led-0', 'led-1', 'led-2' were unexpected)
 From schema: /builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
/builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.example.dtb:
led-controller@14: multi-led@2: Unevaluated properties are not allowed
('#size-cells', 'led-6', 'led-7', 'led-8' were unexpected)
 From schema: /builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml
/builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.example.dtb:
led-controller@14: multi-led@2:#size-cells:0:0: 0 was expected
 From schema: /builds/robherring/linux-dt/Documentation/devicetree/bindings/leds/leds-lp50xx.yaml

Rob