linux-kernel - Re: [PATCH v5 3/6] documentation: media: Add documentation for new RGB and YUV bus formats

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Date:   Fri, 31 Mar 2017 15:14:35 +0200
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Neil Armstrong <narmstrong@...libre.com>,
        dri-devel@...ts.freedesktop.org,
        laurent.pinchart+renesas@...asonboard.com, architt@...eaurora.org,
        mchehab@...nel.org
Cc:     Jose.Abreu@...opsys.com, kieran.bingham@...asonboard.com,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-media@...r.kernel.org,
        hans.verkuil@...co.com, sakari.ailus@...ux.intel.com
Subject: Re: [PATCH v5 3/6] documentation: media: Add documentation for new
 RGB and YUV bus formats

On 30/03/17 11:04, Neil Armstrong wrote:
> Add documentation for added Bus Formats to describe RGB and YUV formats used
> as input to the Synopsys DesignWare HDMI TX Controller.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  Documentation/media/uapi/v4l/subdev-formats.rst | 871 +++++++++++++++++++++++-
>  1 file changed, 857 insertions(+), 14 deletions(-)

This looks good, but the "Packed YUV Formats" documentation should be updated.

Currently this says:

-  The number of bus samples per pixel. Pixels that are wider than the
   bus width must be transferred in multiple samples. Common values are
   1, 1.5 (encoded as 1_5) and 2.

I propose this change:

-  The number of bus samples per pixel. Pixels that are wider than the
   bus width must be transferred in multiple samples. Common values are
   0.5 (encoded as 0_5; in this case two pixels are transferred per bus
   sample), 1, 1.5 (encoded as 1_5) and 2.

With that additional change you can add my:

Acked-by: Hans Verkuil <hans.verkuil@...co.com>

Regards,

	Hans