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From: khalasa@piap.pl (Krzysztof =?utf-8?Q?Ha=C5=82asa?=)
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Steve Longerbeam <slongerbeam@gmail.com>,
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Subject: Re: i.MX6 IPU CSI analog video input on Ventana
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Date: Mon, 04 Jun 2018 10:58:18 +0200
In-Reply-To: <1528102047.5808.11.camel@pengutronix.de> (Philipp Zabel's
        message of "Mon, 04 Jun 2018 10:47:27 +0200")
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I've just tested the PAL setup: in currect situation (v4.17 + Steve's
fix-csi-interlaced.2 + "media: adv7180: fix field type" + a small cheap
PAL camera) the following produces bottom-first interlaced frames:

media-ctl -r -l '"adv7180 2-0020":0->"ipu2_csi1_mux":1[1],
                 "ipu2_csi1_mux":2->"ipu2_csi1":0[1],
                 "ipu2_csi1":2->"ipu2_csi1 capture":0[1]'

media-ctl -V "'adv7180 2-0020':0 [fmt:UYVY2X8/720x576 field:alternate]"
media-ctl -V "'ipu2_csi1_mux':2 [fmt:UYVY2X8/720x576]"
media-ctl -V "'ipu2_csi1':2 [fmt:AYUV32/720x576 field:interlaced]"

"adv7180 2-0020":0 [fmt:UYVY2X8/720x576 field:alternate]
"ipu2_csi1_mux":1  [fmt:UYVY2X8/720x576 field:alternate]
"ipu2_csi1_mux":2  [fmt:UYVY2X8/720x576 field:alternate]
"ipu2_csi1":0      [fmt:UYVY2X8/720x576 field:alternate]
"ipu2_csi1":2      [fmt:AYUV32/720x576 field:interlaced]

I think it would be great if these changes make their way upstream.
The details could be refined then.
-- 
Krzysztof Halasa
Industrial Research Institute for Automation and Measurements PIAP
Al. Jerozolimskie 202, 02-486 Warsaw, Poland