On Fri, Jan 30, 2026 at 10:35:39AM +0100, Gregory Baudet wrote: >This patch allows correct version detection for newer eMMC devices >following the 5.1B version of the standard. This new version of the >standard introduces CSD revision 9, and a new decoding rule of the MDT >field in CID register. > >Signed-off-by: Gregory Baudet <[email protected]> >Cc: Peng Fang <[email protected]> >Cc: Jaehoon Chung <[email protected]> >--- > 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 7dadff27abe..d9e6860bc74 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..47b0f11877d 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, 1) > > #define MMC_CAP(mode) (1 << mode) > #define MMC_MODE_HS (MMC_CAP(MMC_HS) | MMC_CAP(SD_HS))
The changes looks good to me. But I would see whether this has been tested on real devices. Thanks, Peng >-- >2.51.0 > >
