Dear
EDP panel needs to send the AUX command to control the backlight +/-. When i implement the android 11.0.0_1.0.0 (imx8qm) on the VAR-SOM-mx8 module, i think the HDMI_AUX_N/P send the command to the panel to control, but i don't know how to do and where can i check the source code, anybody can help me?
You can see this linux patch commit message:
https://lore.kernel.org/dri-devel/1618418390-15055-2-git-send-email-rajeevny@codeaurora.org/