Need Uefi to send commands to an I2C device


We have a device that needs to be initialized during boot. This is done by writing one I2c command to the device.

I have made a few attempts with no success.

Can someone point me to an example that might be close to our requirement or provide the steps to be able to perform this task.


Hi malcolm.mcdowell,

Please provide the detail of your development.

  1. devkit or custom board
  2. Jetson Linux version

Hi KevinFFF,

We are using an NX module on a custom board.

We are using JetPack 5.02 with kernel 5.10.