SXIMMC_WIDTH
printf("WIDTH: 0x%08x\n", MMC_READ(sc, SXIMMC_WIDTH));
MMC_WRITE(sc, SXIMMC_WIDTH, SXIMMC_WIDTH_1);
MMC_WRITE(sc, SXIMMC_WIDTH, SXIMMC_WIDTH_4);
MMC_WRITE(sc, SXIMMC_WIDTH, SXIMMC_WIDTH_8);