[PATCH 3/9] Doc/DT: Add DT binding documentation for DVI Connector

[Russell King - ARM Linux]

On Fri, Feb 28, 2014 at 02:20:10PM +0200, Tomi Valkeinen wrote:
> Add DT binding documentation for DVI Connector.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
> Reviewed-by: Archit Taneja <archit at ti.com>
> ---
>  .../devicetree/bindings/video/dvi-connector.txt    | 26 ++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/video/dvi-connector.txt
> 
> diff --git a/Documentation/devicetree/bindings/video/dvi-connector.txt b/Documentation/devicetree/bindings/video/dvi-connector.txt
> new file mode 100644
> index 000000000000..6a0aff866c78
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/dvi-connector.txt
> @@ -0,0 +1,26 @@
> +DVI Connector
> +==============
> +
> +Required properties:
> +- compatible: "dvi-connector"
> +
> +Optional properties:
> +- label: a symbolic name for the connector
> +- i2c-bus: phandle to the i2c bus that is connected to DVI DDC
> +
> +Required nodes:
> +- Video port for DVI input
> +
> +Example
> +-------
> +
> +dvi0: connector at 0 {
> +	compatible = "dvi-connector";
> +	label = "dvi";
> +
> +	i2c-bus = <&i2c3>;
> +
> +	dvi_connector_in: endpoint {
> +		remote-endpoint = <&tfp410_out>;
> +	};
> +};

This looks far too simplistic.  There are different classes of DVI
connector - there is:

DVI A - analogue only
DVI D - digital only (single and dual link)
DVI I - both (single and dual digital link)

DRM at least makes a distinction between these three classes, and this
disctinction is part of the user API.  How would a display system know
which kind of DVI connector is wired up on the board from this DT
description?

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