Hi, I am currently using an upstream kernel on a i.MX6 Quad board, and I have a strange issue. The device I am using is able to produce RGB888 MIPI data, or RAW8/RAW10. The MIPI data types are respectively 0x24, 0x2A and 0x2B. When I configure the device to produce RGB888 data, everything is fine, but when I configure it to produce RAW8 data, then the pattern is weird. I am sending the following pattern : 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88 0x99 0xAA 0xBB 0xCC 0xDD 0xEE 0x11 0x22 0x33 0x44 0x55 0x66... And I get in a raw file : 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88 0x33 0x44 0x55 0x66 0x77 0x88 0x99 ... The resulting raw file has the correct size (ie. 1280x720 bytes). I could get a logic analyzer able to decode MIPI-CSI2 protocol, and on this side, the pattern is complete, no data is lost, and the Datatype is 0x2A. It really looks like an issue on the i.MX6 side. So, looking at it, I would say than for each 8 bytes captured, a jump of 8 bytes is done ? The media-ctl is configured like this : media-ctl -l "'ds90ub954 2-0034':0 -> 'imx6-mipi-csi2':0[1]" -v media-ctl -l "'imx6-mipi-csi2':1 -> 'ipu1_csi0_mux':0[1]" -v media-ctl -l "'ipu1_csi0_mux':2 -> 'ipu1_csi0':0[1]" -v media-ctl -l "'ipu1_csi0':2 -> 'ipu1_csi0 capture':0[1]" media-ctl -V "'ds90ub954 2-0034':0 [fmt:SBGGR8_1X8/1280x720 field:none]" media-ctl -V "'imx6-mipi-csi2':1 [fmt:SBGGR8_1X8/1280x720 field:none]" media-ctl -V "'ipu1_csi0_mux':2 [fmt:SBGGR8_1X8/1280x720 field:none]" media-ctl -V "'ipu1_csi0':2 [fmt:SBGGR8_1X8/1280x720 field:none]" The ds90ub954 driver I wrote is very dump and just used to give I²C access and configure the deserializer to produce the pattern. I also tried to use a camera, which produces RAW8 data, but the result is the same, I don't get all my bytes, at least, not in the correct order. And the command used to capture a file is : v4l2-ctl -d4 --set-fmt-video=width=1280,height=720,pixelformat=BA81 --stream-mmap --stream-count=1 --stream-to=/root/cam.raw I can send the raw file if it is needed. I tried several configurations, changing the number of lanes, the frequency, etc. but I have the same behaviour. So, I am right now stuck with this, as I can't see anything which could explain this. IC burst ? Something else ? Thanks a lot, JM
