emmc: add macros CMD21, BUS_WIDTH_DDR_4 and BUS_WIDTH_DDR_8
Add some macros according to JEDEC Standard Embedded Multi-Media
Card (eMMC) Electrical Standard (5.1)": Table 145 - Bus Mode
Selection.
Change-Id: Iaa45e0582653ef4290efd60d039f0bdc420eeb47
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>
diff --git a/include/drivers/emmc.h b/include/drivers/emmc.h
index 921f4cf..286c014 100644
--- a/include/drivers/emmc.h
+++ b/include/drivers/emmc.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -25,6 +25,7 @@
#define EMMC_CMD13 13
#define EMMC_CMD17 17
#define EMMC_CMD18 18
+#define EMMC_CMD21 21
#define EMMC_CMD23 23
#define EMMC_CMD24 24
#define EMMC_CMD25 25
@@ -61,6 +62,8 @@
#define EMMC_BUS_WIDTH_1 0
#define EMMC_BUS_WIDTH_4 1
#define EMMC_BUS_WIDTH_8 2
+#define EMMC_BUS_WIDTH_DDR_4 5
+#define EMMC_BUS_WIDTH_DDR_8 6
#define EMMC_BOOT_MODE_BACKWARD (0 << 3)
#define EMMC_BOOT_MODE_HS_TIMING (1 << 3)
#define EMMC_BOOT_MODE_DDR (2 << 3)