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[87.64.178.175]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4806ce4c3c6sm186207955e9.10.2026.01.30.01.35.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jan 2026 01:35:58 -0800 (PST) From: Gregory Baudet X-Google-Original-From: Gregory Baudet To: u-boot@lists.denx.de Cc: Gregory Baudet , Peng Fang , Jaehoon Chung Subject: [PATCH] mmc: add support for JESD84-B51B with CSD_REV 9 Date: Fri, 30 Jan 2026 10:35:39 +0100 Message-ID: <20260130093539.10167-1-Gregory.B.dev@gmail.com> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean 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 Cc: Peng Fang Cc: Jaehoon Chung --- 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)) -- 2.51.0