#define MMC_RSP_R1B (MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_BUSY)
#define MMC_RSP_R2 (MMC_RSP_LONG|MMC_RSP_CRC)
#define MMC_RSP_R3 (MMC_RSP_SHORT)
+#define MMC_RSP_R6 (MMC_RSP_SHORT|MMC_RSP_CRC)
unsigned int retries; /* max number of retries */
unsigned int error; /* command error */