[PATCH v2 1/3] dt-bindings: media: Add macros for video interface bus types

[Rob Herring]

On Sun, Mar 06, 2022 at 08:04:49PM +0200, Laurent Pinchart wrote:
> On Sun, Mar 06, 2022 at 07:39:03PM +0200, Laurent Pinchart wrote:
> > Add a new dt-bindings/media/video-interfaces.h header that defines
> > macros corresponding to the bus types from media/video-interfaces.yaml.
> > This allows avoiding hardcoded constants in device tree sources.
> > 
> > Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> > ---
> > Changes since v1:
> > 
> > - Dual-license under GPL-2.0-only or MIT
> > - Rename PARALLEL TO BT601
> 
> Contrary to popular belief, further investigation revealed that BT.601
> doesn't define VSYNC and HSYNC (or HREF, as it is also commonly called)
> signals. MEDIA_BUS_TYPE_BT601 is thus likely not a good name. I haven't
> been able to find a standard for parallel camera interfaces that would
> be a good match here. On the display side there's MIPI DPI, but on the
> camera side it seems things have evolved quite organically. I may have
> missed something though.

So keep 'PARALLEL' and anything less ambiguous will be a new type.

Rob