linux-kernel - Re: [v1 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Document use-aux-backlight

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Date:   Thu, 15 Apr 2021 17:04:16 -0500
From:   Rob Herring <robh@...nel.org>
To:     Rajeev Nandan <rajeevny@...eaurora.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, mkrishn@...eaurora.org,
        kalyan_t@...eaurora.org, hoegsberg@...omium.org,
        abhinavk@...eaurora.org, seanpaul@...omium.org
Subject: Re: [v1 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Document
 use-aux-backlight

On Wed, Apr 14, 2021 at 10:09:49PM +0530, Rajeev Nandan wrote:
> If the panel connected to the bridge supports backlight control
> using DPCD registers on the DisplayPort aux channel, setting
> "use-aux-backlight" property in the bridge node will enable the
> registration of a DP aux backlight device from the bridge driver.
> 
> Signed-off-by: Rajeev Nandan <rajeevny@...eaurora.org>
> ---
>  .../devicetree/bindings/display/bridge/ti,sn65dsi86.yaml          | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> index 26932d2..c8d8c00 100644
> --- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
> @@ -58,6 +58,12 @@ properties:
>    clock-names:
>      const: refclk
>  
> +  use-aux-backlight:

use-dp-aux-backlight perhaps.

> +    type: boolean
> +    description:
> +      The panel backlight to be controlled using DPCD registers on
> +      the DP aux channel.

Sounds like a property of the panel, not the bridge. So it should be in 
the panel node.

Rob