For our current releases fsimx8mm-B2021.06.1 and fsimx8mm-Y2021.04.2, the USB-C OTG device is not able to detect an USB host device.
This patch enables the detection for revisions of the PCoreBBDSI equal or greater than 1.30. The check for an USB host device is handled in revision 1.30 through polling and in revision 1.40 through an available interrupt.
To apply the patch navigate in the terminal to the Linux source code and issue the following command:
patch -p1 < PATH/TO/PATCH/0001-Enable-USBC-OTG-function-for-fsimx8mm.patch
To avoid wrong behaviour for the USB-C OTG device please ensure that the define CONFIG_PICOCOREBBDSI_BOARD_REVISION in your device-tree contains the correct value for your PCoreBBDSI:
#define CONFIG_PICOCOREBBDSI_BOARD_REVISION 140 // Example for PCoreBBDSI revision 1.40
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