TDA4VM: SK-TDA4VM CSI connectted to maxim deserializer

chenglei yang

Part Number: TDA4VM

Tool/software:

Hi, camera expert:

We are using SK-TDA4VM which csi port connectted to maxim96712 deserializer. SK-TDA4VM + maxim96712(deserializer) + maxim96717F(serializer).

I had changed the register config of ds90ub960 and ds90ub953 to that of maxim96712 and maxim96717F.

Untill now, SK-TDA4VM I2C can control maxim96712(deserializer) and maxim96717F(serializer). From maxim96712 register, I can see maxim96712 is working well and data can be sent to mipi lane. But I can not get frame from SK-TDA4VM /dev/video.

Can you help?

Thanks a lot.

4 days ago

0 Fabiana Jaimes 4 days ago

TI__Genius 13170 points

Hi,

Please refer to this FAQ: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1403223/faq-most-common-problems-encountered-when-developing-camera-applications-on-the-am6x

Let me know if you have any further questions.

Thank you,

Fabiana

0 chenglei yang 3 days ago in reply to Fabiana Jaimes

Prodigy 120 points

Hi,

How to read SK-TDA4 registers. I had tried command "devmem2 0x04504060" to read reg 0x04504060, but failed. I want to check CSI_RX registers to see if there are some clues for the problem.

Thanks

0 Fabiana Jaimes 3 days ago in reply to chenglei yang

TI__Genius 13170 points

Hello,

To debug this issue, please following this FAQ: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1403196/faq-what-are-the-common-reasons-a-csi-sensor-fails-to-probe-in-v4l2-environment

Thank you,

Fabiana

0 chenglei yang 2 days ago in reply to Fabiana Jaimes

Prodigy 120 points

Hi,

I followed the FAQ, and csi is OK, video device can be found in /dev directory:

root@tda4vm-sk:~# dmesg | grep csi
[    7.596265] cdns-csi2rx 4504000.csi-bridge: Probed CSI2RX with 4/4 lanes, 4 streams, external D-PHY

root@tda4vm-sk:~# ls /dev/video*
/dev/video-imx390-cam0  /dev/video0  /dev/video1  /dev/video10  /dev/video11  /dev/video12  /dev/video13  /dev/video14  /dev/video15  /dev/video16  /dev/video17  /dev/video2  /dev/video3  /dev/video4  /dev/video5  /dev/video6  /dev/video7  /dev/video8  /dev/video9

But I can not get frame using "yavta -c -Fcapture -s 1920x1080 -f UYVY /dev/video3"

0 chenglei yang 2 days ago in reply to chenglei yang

Prodigy 120 points

And because I my max96712 code is derived from ds90ub960, media pipeline seams OK, too. Media pad topology is the same as ds90ub960 which I had brought up successfully.

0 chenglei yang 2 days ago in reply to chenglei yang

Prodigy 120 points

Max96712 had been initialized well, From the refister of 96712 deserlizer, I can confirm data is outputting to TDA4 via 4 mipi lane.

I had read out TDA4 register 0x04504060, value is 0x10000000, which means WAIT_FOR_PACKET.

I had tried to change link-frequencies in file k3-j721e-sk-fusion.dtso, from 800000000 to 1000000000. And I still can not get a frame.

How to do next? This is a very emergent problem for us.

I'm very grateful for your help.

0 chenglei yang 15 hours ago in reply to chenglei yang

Prodigy 120 points

root@tda4vm-sk:/opt/edgeai-gst-apps# media-ctl -p
Media controller API version 6.1.80

Media device information
------------------------
driver          j721e-csi2rx
model           TI-CSI2RX
serial
bus info        platform:4500000.ticsi2rx
hw revision     0x1
driver version  6.1.80

Device topology
- entity 1: 4500000.ticsi2rx (17 pads, 17 links, 1 route)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev0
        routes:
                0/0 -> 2/0 [ACTIVE]
        pad0: Sink
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range]
                <- "cdns_csi2rx.4504000.csi-bridge":1 [ENABLED,IMMUTABLE]
        pad1: Source
                -> "4500000.ticsi2rx context 0":0 [ENABLED,IMMUTABLE]
        pad2: Source
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range]
                -> "4500000.ticsi2rx context 1":0 [ENABLED,IMMUTABLE]
        pad3: Source
                -> "4500000.ticsi2rx context 2":0 [ENABLED,IMMUTABLE]
        pad4: Source
                -> "4500000.ticsi2rx context 3":0 [ENABLED,IMMUTABLE]
        pad5: Source
                -> "4500000.ticsi2rx context 4":0 [ENABLED,IMMUTABLE]
        pad6: Source
                -> "4500000.ticsi2rx context 5":0 [ENABLED,IMMUTABLE]
        pad7: Source
                -> "4500000.ticsi2rx context 6":0 [ENABLED,IMMUTABLE]
        pad8: Source
                -> "4500000.ticsi2rx context 7":0 [ENABLED,IMMUTABLE]
        pad9: Source
                -> "4500000.ticsi2rx context 8":0 [ENABLED,IMMUTABLE]
        pad10: Source
                -> "4500000.ticsi2rx context 9":0 [ENABLED,IMMUTABLE]
        pad11: Source
                -> "4500000.ticsi2rx context 10":0 [ENABLED,IMMUTABLE]
        pad12: Source
                -> "4500000.ticsi2rx context 11":0 [ENABLED,IMMUTABLE]
        pad13: Source
                -> "4500000.ticsi2rx context 12":0 [ENABLED,IMMUTABLE]
        pad14: Source
                -> "4500000.ticsi2rx context 13":0 [ENABLED,IMMUTABLE]
        pad15: Source
                -> "4500000.ticsi2rx context 14":0 [ENABLED,IMMUTABLE]
        pad16: Source
                -> "4500000.ticsi2rx context 15":0 [ENABLED,IMMUTABLE]

- entity 19: cdns_csi2rx.4504000.csi-bridge (5 pads, 2 links, 1 route)
             type V4L2 subdev subtype Unknown flags 0
             device node name /dev/v4l-subdev1
        routes:
                0/0 -> 1/0 [ACTIVE]
        pad0: Sink
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                <- "ds90ub960 6-0029":4 [ENABLED,IMMUTABLE]
        pad1: Source
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                -> "4500000.ticsi2rx":0 [ENABLED,IMMUTABLE]
        pad2: Source
        pad3: Source
        pad4: Source

- entity 25: ds90ub960 6-0029 (6 pads, 2 links, 1 route)
             type V4L2 subdev subtype Unknown flags 0
             device node name /dev/v4l-subdev2
        routes:
                0/0 -> 4/0 [ACTIVE]
        pad0: Sink
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                <- "ds90ub953 6-0040":1 [ENABLED,IMMUTABLE]
        pad1: Sink
        pad2: Sink
        pad3: Sink
        pad4: Source
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                -> "cdns_csi2rx.4504000.csi-bridge":0 [ENABLED,IMMUTABLE]
        pad5: Source

- entity 34: ds90ub953 6-0040 (2 pads, 2 links, 1 route)
             type V4L2 subdev subtype Unknown flags 0
             device node name /dev/v4l-subdev3
        routes:
                0/0 -> 1/0 [ACTIVE]
        pad0: Sink
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                <- "imx390 10-001a":0 [ENABLED,IMMUTABLE]
        pad1: Source
                [stream:0 fmt:UYVY8_2X8/1920x1080 field:none]
                -> "ds90ub960 6-0029":0 [ENABLED,IMMUTABLE]

- entity 39: imx390 10-001a (1 pad, 1 link, 2 routes)
             type V4L2 subdev subtype Sensor flags 0
             device node name /dev/v4l-subdev4
        routes:
                0/0 -> 0/0 [ACTIVE]
                0/0 -> 0/1 [INACTIVE]
        pad0: Source
                [stream:0 fmt:UYVY8_2X8/1920x1080@1/30 field:none colorspace:smpte170m]
                -> "ds90ub953 6-0040":0 [ENABLED,IMMUTABLE]

- entity 45: 4500000.ticsi2rx context 0 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video2
        pad0: Sink
                <- "4500000.ticsi2rx":1 [ENABLED,IMMUTABLE]

- entity 51: 4500000.ticsi2rx context 1 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video3
        pad0: Sink
                <- "4500000.ticsi2rx":2 [ENABLED,IMMUTABLE]

- entity 57: 4500000.ticsi2rx context 2 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video4
        pad0: Sink
                <- "4500000.ticsi2rx":3 [ENABLED,IMMUTABLE]

- entity 63: 4500000.ticsi2rx context 3 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video5
        pad0: Sink
                <- "4500000.ticsi2rx":4 [ENABLED,IMMUTABLE]

- entity 69: 4500000.ticsi2rx context 4 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video6
        pad0: Sink
                <- "4500000.ticsi2rx":5 [ENABLED,IMMUTABLE]

- entity 75: 4500000.ticsi2rx context 5 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video7
        pad0: Sink
                <- "4500000.ticsi2rx":6 [ENABLED,IMMUTABLE]

- entity 81: 4500000.ticsi2rx context 6 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video8
        pad0: Sink
                <- "4500000.ticsi2rx":7 [ENABLED,IMMUTABLE]

- entity 87: 4500000.ticsi2rx context 7 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video9
        pad0: Sink
                <- "4500000.ticsi2rx":8 [ENABLED,IMMUTABLE]

- entity 93: 4500000.ticsi2rx context 8 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video10
        pad0: Sink
                <- "4500000.ticsi2rx":9 [ENABLED,IMMUTABLE]

- entity 99: 4500000.ticsi2rx context 9 (1 pad, 1 link, 0 route)
             type Node subtype V4L flags 0
             device node name /dev/video11
        pad0: Sink
                <- "4500000.ticsi2rx":10 [ENABLED,IMMUTABLE]

- entity 105: 4500000.ticsi2rx context 10 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video12
        pad0: Sink
                <- "4500000.ticsi2rx":11 [ENABLED,IMMUTABLE]

- entity 111: 4500000.ticsi2rx context 11 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video13
        pad0: Sink
                <- "4500000.ticsi2rx":12 [ENABLED,IMMUTABLE]

- entity 117: 4500000.ticsi2rx context 12 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video14
        pad0: Sink
                <- "4500000.ticsi2rx":13 [ENABLED,IMMUTABLE]

- entity 123: 4500000.ticsi2rx context 13 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video15
        pad0: Sink
                <- "4500000.ticsi2rx":14 [ENABLED,IMMUTABLE]

- entity 129: 4500000.ticsi2rx context 14 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video16
        pad0: Sink
                <- "4500000.ticsi2rx":15 [ENABLED,IMMUTABLE]

- entity 135: 4500000.ticsi2rx context 15 (1 pad, 1 link, 0 route)
              type Node subtype V4L flags 0
              device node name /dev/video17
        pad0: Sink
                <- "4500000.ticsi2rx":16 [ENABLED,IMMUTABLE]