mmc: core: Disable HPI for certain Micron (Numonyx) eMMC cards
authorDirk Behme <dirk.behme@de.bosch.com>
Wed, 14 Mar 2018 14:50:09 +0000 (14:50 +0000)
committerUlf Hansson <ulf.hansson@linaro.org>
Thu, 15 Mar 2018 09:50:59 +0000 (10:50 +0100)
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>
drivers/mmc/core/card.h
drivers/mmc/core/quirks.h

index 79a5b985ccf5ee8fe5ba06b5aec717f36799794e..9c821eedd1566750ce044507bd986b5cad9a2ec0 100644 (file)
@@ -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 }
 
index 75d317623852dc9f55586e41a176311a48144e1d..5153577754f02861ceab4689813441f9ac4ea443 100644 (file)
@@ -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
 };