[PATCH 3/3] drm/tilcdc: Add drm bridge support for attaching drm bridge drivers

[Rob Herring]

On Wed, Nov 02, 2016 at 06:32:17PM +0200, Jyri Sarha wrote:
> Adds drm bride support for attaching drm bridge drivers to tilcdc. The
> decision whether a video port leads to an external encoder or bridge
> is made simply based on remote device's compatible string. The code
> has been tested with BeagleBone-Black with and without BeagleBone
> DVI-D Cape Rev A3 using ti-tfp410 driver.
> 
> Signed-off-by: Jyri Sarha <jsarha at ti.com>
> ---
>  .../devicetree/bindings/display/tilcdc/tilcdc.txt  |   7 +-
>  drivers/gpu/drm/tilcdc/tilcdc_drv.c                |   7 +-
>  drivers/gpu/drm/tilcdc/tilcdc_drv.h                |   2 +
>  drivers/gpu/drm/tilcdc/tilcdc_external.c           | 140 ++++++++++++++++++---
>  drivers/gpu/drm/tilcdc/tilcdc_external.h           |   1 +
>  5 files changed, 135 insertions(+), 22 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt b/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> index 6fddb4f..ae7a942 100644
> --- a/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> +++ b/Documentation/devicetree/bindings/display/tilcdc/tilcdc.txt
> @@ -34,9 +34,10 @@ Optional properties:
>  
>  Optional nodes:
>  
> - - port/ports: to describe a connection to an external encoder. The
> -   binding follows Documentation/devicetree/bindings/graph.txt and
> -   suppors a single port with a single endpoint.
> + - port/ports: to describe a connection to an external encoder or
> +   bridge. The binding follows
> +   Documentation/devicetree/bindings/graph.txt and suppors a single
> +   port with a single endpoint.

I don't think a DT change is needed here. Bridge vs. encoder is all DRM 
terminology.

>  
>   - See also Documentation/devicetree/bindings/display/tilcdc/panel.txt and
>     Documentation/devicetree/bindings/display/tilcdc/tfp410.txt for connecting