Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Sumanth_MN — Fri, 08 May 2026 08:20:58 GMT

I am trying to interface HDMI to CSI2 convertor module from waveshare based on Toshiba IC TC358743.
I am using yocto project to build image

$ DISTRO=fsl-imx-wayland MACHINE=imx8mp-lpddr4-frdm source imx-setup-release.sh -b frdm_sources_whinlatter

and i have selected the driver using this command
bitbake -c menuconfig /virtual/kernel

and it is reflecting in the .config file also
CONFIG_VIDEO_TC358743=y
CONFIG_VIDEO_TC358743_CEC=y

and i have modified the dts file accordingly here i am attaching the dts file for your reference.
But i couldnt able to communicate with the IC
even for i2cdetect -y 1 it is not locking (UU) to 0x0F address. but i can able to see the device address in i2c1.

What i am missing in dts file or in driver selection?

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

joanxie — Fri, 08 May 2026 09:12:31 GMT

pls refer to the link as below, to check if you set correctly or not

https://community.nxp.com/t5/i-MX-Processors/i-MX8MP-%E7%A7%BB%E6%A4%8Dtc358743%E5%88%86%E8%BE%A8%E7%8E%87%E8%B0%83%E6%95%B4%E9%97%AE%E9%A2%98/m-p/1631189

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Sumanth_MN — Fri, 08 May 2026 10:48:58 GMT

Getting page not found error for the solution mentioned in this query.
Is there any official support page to resolve this query?

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

joanxie — Sat, 09 May 2026 10:55:20 GMT

we don't have official verified code for this, the link I sent to you shared the dts settings, you can compare with your own, to check if you miss something

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Sumanth_MN — Tue, 12 May 2026 13:02:24 GMT

This Issue is resolved but i am facing one more regarding video pipeline from CSI2 to HDMI using Gstremer, i couldnt able to understand whether its the dts issue or something else.
here i am attaching response log from the device for your reference. and the dts file,

root@imx8mp-lpddr4-frdm:~# i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- UU
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- UU -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
root@imx8mp-lpddr4-frdm:~# v4l2-ctl --list-devices
():
/dev/v4l-subdev0

FSL Capture Media Device (platform:32c00000.bus:camera):
/dev/media0

mxc-isi_v1 (platform:32e00000.isi:cap_devic):
/dev/video3

mxc-isi-m2m_v1 (platform:32e00000.isi:m2m_devic):
/dev/video2

vsi_v4l2dec (platform:vsi_v4l2dec):
/dev/video1

vsi_v4l2enc (platform:vsi_v4l2enc):
/dev/video0

root@imx8mp-lpddr4-frdm:~# v4l2-ctl -d /dev/v4l-subdev1 --query-dv-timings
Active width: 1280
Active height: 720
Total width: 1650
Total height: 750
Frame format: progressive
Polarities: -vsync -hsync
Pixelclock: 74250000 Hz (60.00 frames per second)
Horizontal frontporch: 0
Horizontal sync: 370
Horizontal backporch: 0
Vertical frontporch: 0
Vertical sync: 30
Vertical backporch: 0
Standards:
Flags:
root@imx8mp-lpddr4-frdm:~# v4l2-ctl -d /dev/v4l-subdev1 --set-dv-bt-timings query
BT timings set
root@imx8mp-lpddr4-frdm:~# media-ctl -p
Media controller API version 6.18.2

Media device information
------------------------
driver mxc-md
model FSL Capture Media Device
serial
bus info platform:32c00000.bus:camera
hw revision 0x0
driver version 6.18.2

Device topology
- entity 1: mxc_isi.0 (16 pads, 2 links, 0 routes)
type V4L2 subdev subtype Unknown flags 0
pad0: SINK
<- "mxc-mipi-csi2.0":4 [ENABLED]
pad1: SINK
pad2: SINK
pad3: SINK
pad4: SINK
pad5: SINK
pad6: SINK
pad7: SINK
pad8: SINK
pad9: SINK
pad10: SINK
pad11: SINK
pad12: SOURCE
-> "mxc_isi.0.capture":0 [ENABLED]
pad13: SOURCE
pad14: SOURCE
pad15: SINK

- entity 18: mxc_isi.0.capture (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video3
pad0: SINK
<- "mxc_isi.0":12 [ENABLED]

- entity 22: mxc-mipi-csi2.0 (8 pads, 2 links)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev0
pad0: SINK
<- "tc358743 1-000f":0 [ENABLED,IMMUTABLE]
pad1: SINK
pad2: SINK
pad3: SINK
pad4: SOURCE
-> "mxc_isi.0":0 [ENABLED]
pad5: SOURCE
pad6: SOURCE
pad7: SOURCE

- entity 31: tc358743 1-000f (1 pad, 1 link, 0 routes)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev1
pad0: SOURCE
[stream:0 fmt:RGB888_1X24/1280x720 field:none colorspace:srgb]
[dv.caps:BT.656/1120 min:640x350@13000000 max:1920x1200@165000000 stds:CEA-861,DMT,CVT,GTF caps:progressive,reduced-
blanking,custom]
[dv.detect:BT.656/1120 1280x720p60 (1650x750) stds: flags:]
[dv.current:BT.656/1120 1280x720p60 (1650x750) stds: flags:]
-> "mxc-mipi-csi2.0":0 [ENABLED,IMMUTABLE]

root@imx8mp-lpddr4-frdm:~# gst-launch-1.0 v4l2src device=/dev/video3 num-buffers=10 ! \
> video/x-raw,format=YUY2,width=1920,height=1080,framerate=60/1 ! \
> fakesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to allocate required memory.
Additional debug info:
/usr/src/debug/gstreamer1.0-plugins-good/1.26.6.imx/sys/v4l2/gstv4l2src.c(957): gst_v4l2src_decide_allocation (): /GstPipeline:pipel
ine0/GstV4l2Src:v4l2src0:
Buffer pool activation failed
Execution ended after 0:00:00.025120625
Setting pipeline to NULL ...
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
Additional debug info:
/usr/src/debug/gstreamer1.0/1.26.6.imx/libs/gst/base/gstbasesrc.c(3187): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l
2src0:
streaming stopped, reason not-negotiated (-4)
Freeing pipeline ...

and i am not seeing anything on external display also (Connected over HDMI)

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

joanxie — Wed, 13 May 2026 11:44:11 GMT

pls refer to the chapter 7.3.9 Camera preview of linux user guide, you need to use media-ctl to create a connection

https://www.nxp.com/docs/en/user-guide/UG10163.pdf

i.MX ProcessorsのトピックRe: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board

Re: Iterfacing HDMI-CSI convertor module TC358743 with i.MX8MP- FRDM board