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Hello,
It seems you’re encountering a backlight issue with your 10.1" LVDS display on the Verdin iMX8MP module with the Mallow carrier board. Let’s address the errors from your dmesg logs:
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Cyclic Dependency Error: The message “Fixing up cyclic dependency with panel-lvds-native” suggests a potential configuration issue in the device tree. Ensure that the overlay
verdin-imx8mp-panel-cap-touch-10inch-lvds_overlay.dtbois correctly applied and compatible with your setup. Double-check for any misconfigurations or missing dependencies in the overlay file. -
Dummy Regulator for Backlight: The error “pwm-backlight backlight-lvds-native: supply power not found using dummy regulator” indicates that the backlight power supply is not properly defined. Verify that the power supply for the backlight is correctly specified in your device tree. You may need to add or modify a regulator entry to ensure the backlight receives power.
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Environment Variables: Confirm that the environment variables for the Mallow board and Wi-Fi variant are correctly set and match your hardware configuration.
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Comparison with Evaluation Board: Since the setup works on the Verdin evaluation board with the DSI to LVDS adapter, compare the device tree and configuration settings between the two setups. This might help identify any discrepancies or missing configurations on the Mallow board.
By addressing these points, you should be able to resolve the backlight issue. If the problem persists, further investigation into the device tree configuration and hardware connections may be necessary.
Best regards,
Toradex AI Assistant
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