Commit dbe7dc6b authored Mar 14, 2018 by Dirk Behme Committed by Ulf Hansson Mar 15, 2018

mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards



Certain Micron eMMC v4.5 cards might get broken when HPI feature is used
and hence this patch disables the HPI feature for such buggy cards.

In U-Boot, these cards are reported as

Manufacturer: Micron (ID: 0xFE)
OEM: 0x4E
Name: MMC32G
Revision: 19 (0x13)
Serial: 959241022  Manufact. date: 8/2015 (0x82)  CRC: 0x00
Tran Speed: 52000000
Rd Block Len: 512
MMC version 4.5
High Capacity: Yes
Capacity: 29.1 GiB
Boot Partition Size: 16 MiB
Bus Width: 8-bit

According to JEDEC JEP106 manufacturer 0xFE is Numonyx, which was bought by
Micron.

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Mark Craske <Mark_Craske@mentor.com>
Cc: <stable@vger.kernel.org> # 4.8+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

parent e22842dd

drivers/mmc/core/card.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -82,6 +82,7 @@ struct mmc_fixup {
		#define CID_MANFID_APACER 0x27
		#define CID_MANFID_KINGSTON 0x70
		#define CID_MANFID_HYNIX 0x90
		#define CID_MANFID_NUMONYX 0xFE

		#define END_FIXUP { NULL }

drivers/mmc/core/quirks.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -109,6 +109,12 @@ static const struct mmc_fixup mmc_ext_csd_fixups[] = {
		*/
		MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX,
		0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5),
		/*
		* Certain Micron (Numonyx) eMMC 4.5 cards might get broken when HPI
		* feature is used so disable the HPI feature for such buggy cards.
		*/
		MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_NUMONYX,
		0x014e, add_quirk, MMC_QUIRK_BROKEN_HPI, 6),

		END_FIXUP
		};

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