linux-kernel - Re: [PATCH v3 00/24] i.MX Media Driver

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Message-ID: <1485872710.2932.65.camel@pengutronix.de>
Date:   Tue, 31 Jan 2017 15:25:10 +0100
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Steve Longerbeam <slongerbeam@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        kernel@...gutronix.de, fabio.estevam@....com,
        linux@...linux.org.uk, mchehab@...nel.org, hverkuil@...all.nl,
        nick@...anahar.org, markus.heiser@...marIT.de,
        laurent.pinchart+renesas@...asonboard.com, bparrot@...com,
        geert@...ux-m68k.org, arnd@...db.de, sudipm.mukherjee@...il.com,
        minghsiu.tsai@...iatek.com, tiffany.lin@...iatek.com,
        jean-christophe.trotin@...com, horms+renesas@...ge.net.au,
        niklas.soderlund+renesas@...natech.se, robert.jarzmik@...e.fr,
        songjun.wu@...rochip.com, andrew-ct.chen@...iatek.com,
        gregkh@...uxfoundation.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: Re: [PATCH v3 00/24] i.MX Media Driver

On Tue, 2017-01-31 at 14:54 +0100, Philipp Zabel wrote:
> Hi Steve,
> 
> I have just tested the imx-media-staging-md-wip branch on a Nitrogen6X
> with a tc358743 (BD_HDMI_MIPI HDMI to MIPI CSI-2 receiver board). Some
> observations:
> 
> # Link pipeline
> media-ctl -l "'tc358743 1-000f':0->'imx6-mipi-csi2':0[1]"
> media-ctl -l "'imx6-mipi-csi2':1->'ipu1_csi0_mux':0[1]"
> media-ctl -l "'ipu1_csi0_mux':2->'ipu1_csi0':0[1]"
> media-ctl -l "'ipu1_csi0':2->'ipu1_csi0 capture':0[1]"
> 
> # Provide an EDID to the HDMI source
> v4l2-ctl -d /dev/v4l-subdev2 --set-edid=file=edid-1080p.hex
> # At this point the HDMI source is enabled and sends a 1080p60 signal
> # Configure detected DV timings
> media-ctl --set-dv "'tc358743 1-000f':0"
> 
> # Set pad formats
> media-ctl --set-v4l2 "'tc358743 1-000f':0[fmt:UYVY/1920x1080]"
> media-ctl --set-v4l2 "'imx6-mipi-csi2':1[fmt:UYVY2X8/1920x1080]"
> media-ctl --set-v4l2 "'ipu1_csi0_mux':2[fmt:UYVY2X8/1920x1080]"

I noticed this seems to get ignored. The format is incorrectly set to
UYVY even though I request UYVY2X8 (see CSI2IPU chapter, Figure 19-10.
YUV422-8 data reception in the reference manual), but it seems to work
anyway.

regards
Philipp