[PATCH] mmc: Add support for eMMC 5.1B specification

[Han Xu]

Add support for eMMC specification version 5.1B by defining
MMC_VERSION_5_1B and including it in the version array.

eMMC 5.1B (JESD84-B51B) is a minor revision of the 5.1 specification
that primarily addresses MDT (Manufacturing Date) adjustment for dates
beyond 2025. This aligns with the Linux kernel commit 9996707822f82
("mmc: core: Adjust MDT beyond 2025").

Since the manufacturing date field is not currently used in U-Boot,
this change has no functional impact beyond proper device recognition.
It allows the driver to correctly identify and initialize eMMC devices
that report version 5.1B in their Extended CSD register.

Signed-off-by: Han Xu <han...@nxp.com>
---
 drivers/mmc/mmc.c | 3 ++-
 include/mmc.h     | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index c5705f4f215..f0e38efb262 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -2343,7 +2343,8 @@ static int mmc_startup_v4(struct mmc *mmc)
                MMC_VERSION_4_41,
                MMC_VERSION_4_5,
                MMC_VERSION_5_0,
-               MMC_VERSION_5_1
+               MMC_VERSION_5_1,
+               MMC_VERSION_5_1B
        };
 
 #if CONFIG_IS_ENABLED(MMC_TINY)
diff --git a/include/mmc.h b/include/mmc.h
index 51d3f2f8dd5..9509c9e9543 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -54,6 +54,7 @@ struct bd_info;
 #define MMC_VERSION_4_5                MAKE_MMC_VERSION(4, 5, 0)
 #define MMC_VERSION_5_0                MAKE_MMC_VERSION(5, 0, 0)
 #define MMC_VERSION_5_1                MAKE_MMC_VERSION(5, 1, 0)
+#define MMC_VERSION_5_1B       MAKE_MMC_VERSION(5, 1, 0xB)
 
 #define MMC_CAP(mode)          (1 << mode)
 #define MMC_MODE_HS            (MMC_CAP(MMC_HS) | MMC_CAP(SD_HS))
-- 
2.34.1