diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 913e575..bfcef8a 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -62,6 +62,12 @@
 
 #define MMC_BUS_WIDTH_1		0
 #define MMC_BUS_WIDTH_4		2
+
+	unsigned char	timing;			/* timing specification used */
+
+#define MMC_TIMING_LEGACY	0
+#define MMC_TIMING_MMC_HS	1
+#define MMC_TIMING_SD_HS	2
 };
 
 struct mmc_host_ops {
@@ -87,6 +93,8 @@
 #define MMC_CAP_4_BIT_DATA	(1 << 0)	/* Can the host do 4 bit transfers */
 #define MMC_CAP_MULTIWRITE	(1 << 1)	/* Can accurately report bytes sent to card on error */
 #define MMC_CAP_BYTEBLOCK	(1 << 2)	/* Can do non-log2 block sizes */
+#define MMC_CAP_MMC_HIGHSPEED	(1 << 3)	/* Can do MMC high-speed timing */
+#define MMC_CAP_SD_HIGHSPEED	(1 << 4)	/* Can do SD high-speed timing */
 
 	/* host specific block data */
 	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */