# i.MX8M Hummingbird Pulse + TC358743 HDMI to CSI-2

**URL:** <https://community.solid-run.com/t/i-mx8m-hummingbird-pulse-tc358743-hdmi-to-csi-2/551>\
**Category:** NXP i.MX8M Plus\
**Created:** [December 28, 2022, 5:34pm UTC](https://community.solid-run.com/t/i-mx8m-hummingbird-pulse-tc358743-hdmi-to-csi-2/551 "2022-12-28T17:34:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jgrider](https://avatars.discourse-cdn.com/v4/letter/j/a8b319/32.png) [@jgrider](https://community.solid-run.com/u/jgrider)\
**Post date:** [December 28, 2022, 5:34pm UTC](https://community.solid-run.com/t/i-mx8m-hummingbird-pulse-tc358743-hdmi-to-csi-2/551/1 "2022-12-28T17:34:13Z")

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Hello, I am a bit new to recompiling Linux so bare with me on this.

**Outline**

I have a Solidrun i.MX8M Plus SOM (on a HummingBoard Pulse SBC) and a geekworm C779 HDMI to CSI-2 Module (Toshiba TC358743XBG chip)

All I’m trying to do right now is make the CSI input coming from the HDMI to CSI module display on the screen (HDMI output)

**Compiling Yocto**

I started with the Yocto build instructions from the SolidRun imx8 Yocto meta repo.

**Configuring Linux Kernel Drivers**

I took this and ran the Linux kernel configuration tool to enable the TC358743 drivers.

Using this command to enable the TC358743 in the menuconfig

`bitbake virtual/kernel -c menuconfig`

**Making it work**

This is where I am getting stuck. I am not sure if simply including TC358743 drivers are sufficient to get the HDMI to CSI converter working. There are several steps in the Geekworm instructions that I know need to be executed to configure the EDID data these are outlined in the Geekworm instructions.

[Geekworm Instructions](https://wiki.geekworm.com/C779-Software)

I’m a bit lost on how to use the CSI video device in a way that will enable the TC358743 input. I assume that it’s some combination of these two guides.

Is there anything I’m missing here?

Do I have to specify the I2C port that the TC358743 is connected to? I2C2/I2C3 I don’t know how the kernel would know which one to use in this case.

Which video device should I be using? What would it be called when I run `v4l2-ctl --list-devices` what should I be expecting? It seems that the video devices listed are the same after I recompiled Yocto with the TC358743 drivers enabled.

[https://solidrun.atlassian.net/wiki/spaces/developer/pages/315588609/HummingBoard+Pulse+i.MX8M+Plus+-+Basler+Camera+Quick+Start+Guide](https://solidrun.atlassian.net/wiki/spaces/developer/pages/315588609/HummingBoard+Pulse+i.MX8M+Plus+-+Basler+Camera+Quick+Start+Guide)

Any assistance would be greatly appreciated.