diff options
| author | Bean Huo <beanhuo@micron.com> | 2023-10-30 23:48:09 +0100 |
|---|---|---|
| committer | Parth Pancholi <parth.pancholi@toradex.com> | 2023-11-14 13:41:56 +0100 |
| commit | 61d265bd311b0bde2399728676de22986ad97dd3 (patch) | |
| tree | d179fba93c05ac4f7d986c208cd7ea9128f7236c /drivers/mmc/core/quirks.h | |
| parent | 90fcfd0d5894d561b3801279565b044bde3ba92e (diff) | |
mmc: Add quirk MMC_QUIRK_BROKEN_CACHE_FLUSH for Micron eMMC Q2J54A
Micron MTFC4GACAJCN eMMC supports cache but requires that flush cache
operation be allowed only after a write has occurred. Otherwise, the
cache flush command or subsequent commands will time out.
Upstream-Status: Backport [ed9009ad300c0f15a3ecfe9613547b1962bde02c]
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Rafael Beims <rafael.beims@toradex.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231030224809.59245-1-beanhuo@iokpp.de
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/quirks.h')
| -rw-r--r-- | drivers/mmc/core/quirks.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h index 3dba15bccce2..4aa3cdba4cee 100644 --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -99,6 +99,14 @@ static const struct mmc_fixup mmc_blk_fixups[] = { MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc, MMC_QUIRK_TRIM_BROKEN), + /* + * Micron MTFC4GACAJCN-1M supports TRIM but does not appear to support + * WRITE_ZEROES offloading. It also supports caching, but the cache can + * only be flushed after a write has occurred. + */ + MMC_FIXUP("Q2J54A", CID_MANFID_MICRON, 0x014e, add_quirk_mmc, + MMC_QUIRK_TRIM_BROKEN | MMC_QUIRK_BROKEN_CACHE_FLUSH), + END_FIXUP }; |