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TMS320C6745: SDCARD Bus width using FATFS

Part Number: TMS320C6745

Is seems that the pdk is hardcoded to use only 1 bit data with SDCARD

The field supportedBusWidth in MMCSDInitCfg specify only the values accepted with successive MMCSD_control (handle, MMCSD_CMD_SETBUSWIDTH, (void *)&Data).

But the driver doesn't use this.

Trying to manually invoke this function after FATFS_open has no effect (maybe it has to be done inside the initialization phase).

It is possible to use 4 bit data with SDCARD? Wich could be the simplest way to do this in firmware?