linux-kernel - Re: [PATCH v2 2/4] dt-bindings: leds: commonize leds property

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250905152404.GB953718-robh@kernel.org>
Date: Fri, 5 Sep 2025 10:24:04 -0500
From: Rob Herring <robh@...nel.org>
To: Aleksandrs Vinarskis <alex@...arskis.com>
Cc: Hans de Goede <hansg@...nel.org>, Lee Jones <lee@...nel.org>,
	Pavel Machek <pavel@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
	Daniel Thompson <danielt@...nel.org>,
	Jingoo Han <jingoohan1@...il.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	Jacopo Mondi <jacopo@...ndi.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>, linux-leds@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Daniel Thompson <daniel.thompson@...aro.org>,
	dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: leds: commonize leds property

On Fri, Sep 05, 2025 at 09:59:30AM +0200, Aleksandrs Vinarskis wrote:
> A number of existing schemas use 'leds' property to provide
> phandle-array of LED(s) to the consumer. Additionally, with the
> upcoming privacy-led support in device-tree, v4l2 subnode could be a
> LED consumer, meaning that all camera sensors should support 'leds'
> and 'led-names' property via common 'video-interface-devices.yaml'.
> 
> To avoid dublication, commonize 'leds' property from existing schemas
> to newly introduced 'led-consumer.yaml'.
> 
> Signed-off-by: Aleksandrs Vinarskis <alex@...arskis.com>
> ---
>  .../devicetree/bindings/leds/backlight/led-backlight.yaml          | 7 +------
>  Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml  | 6 +-----
>  .../devicetree/bindings/media/video-interface-devices.yaml         | 3 +++
>  3 files changed, 5 insertions(+), 11 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml
> index f5554da6bc6c73e94c4a2c32b150b28351b25f16..5e19b4376715eeb05cb789255db209ed27f8822f 100644
> --- a/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml
> +++ b/Documentation/devicetree/bindings/leds/backlight/led-backlight.yaml
> @@ -18,17 +18,12 @@ description:
>  
>  allOf:
>    - $ref: common.yaml#
> +  - $ref: /schemas/leds/leds-consumer.yaml#

Drop.

>  
>  properties:
>    compatible:
>      const: led-backlight
>  
> -  leds:
> -    description: A list of LED nodes
> -    $ref: /schemas/types.yaml#/definitions/phandle-array
> -    items:
> -      maxItems: 1

You need to keep the property here:

leds: true

> -
>  required:
>    - compatible
>    - leds
> diff --git a/Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml b/Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml
> index 8ed059a5a724f68389a1d0c4396c85b9ccb2d9af..b4f326e8822a3bf452b22f5b9fa7189696f760a4 100644
> --- a/Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml
> +++ b/Documentation/devicetree/bindings/leds/leds-group-multicolor.yaml
> @@ -17,16 +17,12 @@ properties:
>    compatible:
>      const: leds-group-multicolor
>  
> -  leds:
> -    description:
> -      An aray of monochromatic leds
> -    $ref: /schemas/types.yaml#/definitions/phandle-array
> -
>  required:
>    - leds
>  
>  allOf:
>    - $ref: leds-class-multicolor.yaml#
> +  - $ref: /schemas/leds/leds-consumer.yaml#


Same comments in this one.

>  
>  unevaluatedProperties: false
>  
> diff --git a/Documentation/devicetree/bindings/media/video-interface-devices.yaml b/Documentation/devicetree/bindings/media/video-interface-devices.yaml
> index cf7712ad297c01c946fa4dfdaf9a21646e125099..1e25cea0ff71da2cfd1c7c4642713199f3542c0a 100644
> --- a/Documentation/devicetree/bindings/media/video-interface-devices.yaml
> +++ b/Documentation/devicetree/bindings/media/video-interface-devices.yaml
> @@ -10,6 +10,9 @@ maintainers:
>    - Jacopo Mondi <jacopo@...ndi.org>
>    - Sakari Ailus <sakari.ailus@...ux.intel.com>
>  
> +allOf:
> +  - $ref: /schemas/leds/leds-consumer.yaml#

This can be dropped. The user still has to define how many entries and 
what the values of led-names are.

> +
>  properties:
>    flash-leds:
>      $ref: /schemas/types.yaml#/definitions/phandle-array
> 
> -- 
> 2.48.1
>