linux-kernel - Re: [PATCH 12/16] gpu: ipu-v3: Fix CSI0 blur in NTSC format

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Date:	Tue, 19 Jul 2016 15:32:16 +0200
From:	Philipp Zabel <p.zabel@...gutronix.de>
To:	Steve Longerbeam <steve_longerbeam@...tor.com>
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Hans Verkuil <hverkuil@...all.nl>
Subject: Re: [PATCH 12/16] gpu: ipu-v3: Fix CSI0 blur in NTSC format

Am Samstag, den 16.07.2016, 13:24 -0700 schrieb Steve Longerbeam:
[...]
> > Hmm, do you mean define something like a V4L2_MBUS_BT656_NEWAVMODE,
> > and then add a new "newavmode" boolean DT binding parsed by
> > v4l2_of_parse_endpoint()?
> >
> > I don't know if that would make sense given that this NEWAVMODE is a kind
> > of hack of the BT.656 standard, only used by Analog Devices 
> > encoders/decoders.
> >
> > Although there a _lot_ of AD encoder/decoder chips (and subdev drivers 
> > written for
> > them), so maybe it would make sense to do this.
> 
> I don't think a "newavmode" boolean property would necessitate a whole new
> mbus type, but perhaps just a new parallel bus flag. I will propose a 
> patch at linux-media that adds this.

Sounds good to me, the V4L2_MBUS_BT656 documentation comment in
include/media/v4l2-mediabus.h should be extended to include the new
non-standard mode then.

regards
Philipp