SDMMC_CMD_START_CMD
HWRITE4(sc, SDMMC_CMD, SDMMC_CMD_START_CMD |
if ((HREAD4(sc, SDMMC_CMD) & SDMMC_CMD_START_CMD) == 0)
HWRITE4(sc, SDMMC_CMD, SDMMC_CMD_START_CMD |
if ((HREAD4(sc, SDMMC_CMD) & SDMMC_CMD_START_CMD) == 0)
uint32_t cmdval = SDMMC_CMD_START_CMD | SDMMC_CMD_USE_HOLD_REG;