MC_FIFO_CTL       851 drivers/mmc/host/rtsx_usb_sdmmc.c 				rtsx_usb_write_register(ucr, MC_FIFO_CTL,
MC_FIFO_CTL       613 include/linux/rtsx_usb.h 	rtsx_usb_ep0_write_register(ucr, MC_FIFO_CTL,