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The error log you are seeing is related to the failure of attaching a DRM bridge to the MIPI DSI interface on your i.MX 8M Mini core board. This is likely because there is no hardware bridge component present on the board, which is necessary for the MIPI DSI interface to function correctly with the display panel.
To address this issue, you can consider the following options:
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Disable the Driver: If you do not have a hardware bridge and do not plan to use one, you can disable the
imx_sec_dsim_drv(DRM_IMX_SEC_DSIM) configuration in your kernel. This will prevent the driver from attempting to attach a non-existent bridge, thus eliminating the error messages. -
Check Device Tree Configuration: Ensure that your device tree configuration does not include nodes or settings for a bridge that does not exist. This might involve removing or commenting out sections related to the bridge in your device tree source files.
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Panel Driver Configuration: If you are enabling a panel driver, make sure it is correctly configured to work without a bridge, if possible. Some panels might require a bridge, and if your setup does not include one, you may need to select a different panel or configuration that does not require a bridge.
If you are unsure about the specific changes needed in the device tree or kernel configuration, you might need to consult the documentation for your specific hardware setup or reach out to the hardware vendor for more detailed guidance.
Please, also check if these links can help you solve your problem: