mmc: core: Block CMD23 support for UHS104/SDXC cards.

SD cards operating at UHS104 or better support SET_BLOCK_COUNT.

Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Reviewed-by: Arindam Nath <arindam.nath@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 4a0e27baaea0..c6927a4d157f 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -72,6 +72,9 @@ struct sd_scr {
         unsigned char           bus_widths;
 #define SD_SCR_BUS_WIDTH_1      (1<<0)
 #define SD_SCR_BUS_WIDTH_4      (1<<2)
+        unsigned char           cmds;
+#define SD_SCR_CMD20_SUPPORT   (1<<0)
+#define SD_SCR_CMD23_SUPPORT   (1<<1)
 };
 
 struct sd_ssr {
diff --git a/include/linux/mmc/sd.h b/include/linux/mmc/sd.h
index c648878f6734..7d35d52c3df3 100644
--- a/include/linux/mmc/sd.h
+++ b/include/linux/mmc/sd.h
@@ -66,7 +66,7 @@
 
 #define SCR_SPEC_VER_0          0       /* Implements system specification 1.0 - 1.01 */
 #define SCR_SPEC_VER_1          1       /* Implements system specification 1.10 */
-#define SCR_SPEC_VER_2          2       /* Implements system specification 2.00 */
+#define SCR_SPEC_VER_2          2       /* Implements system specification 2.00-3.0X */
 
 /*
  * SD bus widths