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authorTomas Melin <tomas.melin@vaisala.com>2016-11-25 09:01:03 (GMT)
committerJaehoon Chung <jh80.chung@samsung.com>2016-12-01 02:09:44 (GMT)
commitcd3d48807dfb64f521fcbc30034d4e921d842a5b (patch)
treec0b1d7778cefb47b0af8cd5c5e8a42f882102529 /include/mmc.h
parentf0ecfc5e7e412c2098627cab2133fb2e284edfea (diff)
downloadu-boot-cd3d48807dfb64f521fcbc30034d4e921d842a5b.tar.xz
mmc: add bkops-enable command
Add new command that provides possibility to enable the background operations handshake functionality (BKOPS_EN, EXT_CSD byte [163]) on eMMC devices. This is an optional feature of eMMCs, the setting is write-once. The command must be explicitly taken into use with CONFIG_CMD_BKOPS_ENABLE. Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
Diffstat (limited to 'include/mmc.h')
-rw-r--r--include/mmc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/mmc.h b/include/mmc.h
index e815eb3..2285323 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -174,6 +174,7 @@
#define EXT_CSD_MAX_ENH_SIZE_MULT 157 /* R */
#define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
+#define EXT_CSD_BKOPS_EN 163 /* R/W & R/W/E */
#define EXT_CSD_WR_REL_PARAM 166 /* R */
#define EXT_CSD_WR_REL_SET 167 /* R/W */
#define EXT_CSD_RPMB_MULT 168 /* RO */
@@ -188,6 +189,7 @@
#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
#define EXT_CSD_BOOT_MULT 226 /* RO */
+#define EXT_CSD_BKOPS_SUPPORT 502 /* RO */
/*
* EXT_CSD field definitions
@@ -540,6 +542,10 @@ int mmc_rpmb_read(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
int mmc_rpmb_write(struct mmc *mmc, void *addr, unsigned short blk,
unsigned short cnt, unsigned char *key);
+#ifdef CONFIG_CMD_BKOPS_ENABLE
+int mmc_set_bkops_enable(struct mmc *mmc);
+#endif
+
/**
* Start device initialization and return immediately; it does not block on
* polling OCR (operation condition register) status. Then you should call