linux-kernel - Re: [PATCH 5/5] media: i2c: tvp7002: add OF support

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Date:	Wed, 15 May 2013 11:42:11 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Prabhakar Lad <prabhakar.csengg@...il.com>
Cc:	LMML <linux-media@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Sakari Ailus <sakari.ailus@....fi>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH 5/5] media: i2c: tvp7002: add OF support

Hi Prabhakar,

On Wednesday 15 May 2013 10:48:05 Prabhakar Lad wrote:
> On Tue, May 14, 2013 at 9:04 PM, Laurent Pinchart wrote:
> > On Tuesday 14 May 2013 16:15:34 Lad Prabhakar wrote:
> >> From: Lad, Prabhakar <prabhakar.csengg@...il.com>
> >> 
> >> add OF support for the tvp7002 driver.
> >> 
> >> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
> >> Cc: Hans Verkuil <hans.verkuil@...co.com>
> >> Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> >> Cc: Mauro Carvalho Chehab <mchehab@...hat.com>
> >> Cc: Guennadi Liakhovetski <g.liakhovetski@....de>
> >> Cc: Sylwester Nawrocki <s.nawrocki@...sung.com>
> >> Cc: Sakari Ailus <sakari.ailus@....fi>
> >> Cc: Grant Likely <grant.likely@...retlab.ca>
> >> Cc: Rob Herring <rob.herring@...xeda.com>
> >> Cc: Rob Landley <rob@...dley.net>
> >> Cc: devicetree-discuss@...ts.ozlabs.org
> >> Cc: linux-doc@...r.kernel.org
> >> Cc: linux-kernel@...r.kernel.org
> >> Cc: davinci-linux-open-source@...ux.davincidsp.com
> >> ---
> >> 
> >>  .../devicetree/bindings/media/i2c/tvp7002.txt      |   42 +++++++++++++
> >>  drivers/media/i2c/tvp7002.c                        |   64 ++++++++++++--
> >>  2 files changed, 99 insertions(+), 7 deletions(-)
> >>  create mode 100644
> >>  Documentation/devicetree/bindings/media/i2c/tvp7002.txt
> >> 
> >> diff --git a/Documentation/devicetree/bindings/media/i2c/tvp7002.txt
> >> b/Documentation/devicetree/bindings/media/i2c/tvp7002.txt new file mode
> >> 100644
> >> index 0000000..1ebd8b1
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/media/i2c/tvp7002.txt
> >> @@ -0,0 +1,42 @@
> >> +* Texas Instruments TV7002 video decoder
> >> +
> >> +The TVP7002 device supports digitizing of video and graphics signal in
> >> +RGB and +YPbPr color space.
> >> +
> >> +Required Properties :
> >> +- compatible : Must be "ti,tvp7002"
> >> +
> >> +- hsync-active: HSYNC Polarity configuration for endpoint.
> >> +
> >> +- vsync-active: VSYNC Polarity configuration for endpoint.
> >> +
> >> +- pclk-sample: Clock polarity of the endpoint.
> >> +
> >> +- ti,tvp7002-fid-polarity: Active-high Field ID polarity of the
> >> endpoint.
> >> +
> >> +- ti,tvp7002-sog-polarity: Sync on Green output polarity of the
> >> endpoint.
> > 
> > Would it make sense to define field-active and sog-active properties in
> > the V4L2 bindings instead of having per-chip properties ?
> 
> yes you are right these properties need to be in the device node rather than
> the port node. I'll send alone this patch of the series as v2 fixing the
> above.

That wasn't my point. What I'm wondering is whether ti,tvp7002-fid-polarity 
shouldn't be named field-active and specified in 
Documentation/devicetree/bindings/media/video-interfaces.txt (same for 
ti,tvp7002-sog-polarity).

-- 
Regards,

Laurent Pinchart

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