HDMI_DDC_SCL Clock Change


My development environment is as follows.

  • Hardware Platform - Custom Jetson Xavier NX
  • JetPack Version - 4.5
  • L4T - 32.5

I want to change HDMI_DDC_SCL’s clock.
I know to change the clock with the following command:

cat /sys/bus/i2c/devices/i2c-0/bus_clk_rate
echo 400000 > /sys/bus/i2c/devices/i2c-0/bus_clk_rate

Where do I need to modify the Kernel source?

May I know what is your purpose to change this value?

The clock-frequency in the device tree should be able to change this.

HDMI EDID is not recognized by certain monitors.
The recommended frequency for the level shift chip is 400kHz. (nx custom board)

It was in a file in the following path:
But making corrections requires thought.


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