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AM5728: Pinmux file output error

Part Number: AM5728

Hello everyone

I am using Pinmux Version.4.0.1537.

An error occurs in the output of the following two file formats with Pinmux Tool.

genericFileFormatIOdelay.txt
 Error: Loopback 'Default' for MMC3 has been removed and is no longer supported. Please select another value.
genericFileFormatPadConf.txt
 Error: Loopback 'Default' for MMC3 has been removed and is no longer supported. Please select another value.

The following six files are output normally.

boardPadDelay.h, boardPadDelayDevice.c, boardPadDelayInit.c, boardPadDelayTune.h, devicetree.txt, PinmuxConfigSummary.csv

Question 1, * .C, * .h are output normally.
  Is there any problem with MMC3 even if it is used as it is?
Q2. Is there a workaround for the error?

Best Regards

AM5728_mmc_error.zip