@@ -2432,6 +2432,9 @@ static int mmc_startup_v4(struct mmc *mmc)
mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
+ mmc->can_trim =
+ !!(ext_csd[EXT_CSD_SEC_FEATURE] & EXT_CSD_SEC_FEATURE_TRIM_EN);
+
return 0;
error:
if (mmc->ext_csd) {
@@ -241,6 +241,7 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx)
#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_SEC_FEATURE 231 /* RO */
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
#define EXT_CSD_BKOPS_SUPPORT 502 /* RO */
@@ -315,6 +316,8 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx)
#define EXT_CSD_WR_DATA_REL_USR (1 << 0) /* user data area WR_REL */
#define EXT_CSD_WR_DATA_REL_GP(x) (1 << ((x)+1)) /* GP part (x+1) WR_REL */
+#define EXT_CSD_SEC_FEATURE_TRIM_EN (1 << 4) /* Support secure & insecure trim */
+
#define R1_ILLEGAL_COMMAND (1 << 22)
#define R1_APP_CMD (1 << 5)
@@ -687,6 +690,7 @@ struct mmc {
uint tran_speed;
uint legacy_speed; /* speed for the legacy mode provided by the card */
uint read_bl_len;
+ bool can_trim;
#if CONFIG_IS_ENABLED(MMC_WRITE)
uint write_bl_len;
uint erase_grp_size; /* in 512-byte sectors */
When secure/insecure TRIM operations are supported. When used as erase command argument it applies the erase operation to write blocks instead of erase groups. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> --- drivers/mmc/mmc.c | 3 +++ include/mmc.h | 4 ++++ 2 files changed, 7 insertions(+)