Re: [PATCH v3 1/5] dt-bindings: display: bridge: Add ddc-i2c-bus for anx7688

[Rob Herring]

On Sat, Feb 18, 2023 at 07:17:08PM +0800, Pin-yen Lin wrote:
> Introduce a optional "ddc-i2c-bus" property for anx7688 bridge. This
> allows the bridge to register a .get_edid callback.

What's .get_edid? This is a binding and is independent of Linux.

> 
> Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx>
> ---
> 
> Changes in v3:
> - New in v3
> 
>  .../bindings/display/bridge/google,cros-ec-anx7688.yaml      | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml b/Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml
> index a44d025d33bd..9d5ce8172e88 100644
> --- a/Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.yaml
> @@ -25,6 +25,10 @@ properties:
>      maxItems: 1
>      description: I2C address of the device.
>  
> +  ddc-i2c-bus:
> +    description: phandle link to the I2C controller used for DDC EDID probing
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +

No, this belongs in the connector node. The DDC signals are routed to 
the connector, not the bridge chip.

Rob