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| author |  Bean Huo <beanhuo@micron.com>
| 2023-10-30 23:48:09 +0100 |
|---|---|---|
| committer |  Ulf Hansson <ulf.hansson@linaro.org>
| 2023-11-03 12:01:32 +0100 |
| commit | ed9009ad300c0f15a3ecfe9613547b1962bde02c (patch) | |
| tree | 3b0ec79698eca6b61635daf60762763f86d47992 /drivers/mmc/core/quirks.h | |
| parent | mmc: sdhci_am654: fix start loop index for TAP value parsing (diff) | |
| download | linux-ed9009ad300c0f15a3ecfe9613547b1962bde02c.tar.gz linux-ed9009ad300c0f15a3ecfe9613547b1962bde02c.tar.bz2 linux-ed9009ad300c0f15a3ecfe9613547b1962bde02c.zip | |
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.
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 | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h index 32b64b564fb1..cca71867bc4a 100644 --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -110,11 +110,12 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = { MMC_QUIRK_TRIM_BROKEN), /* - * Micron MTFC4GACAJCN-1M advertises TRIM but it does not seems to - * support being used to offload WRITE_ZEROES. + * 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_TRIM_BROKEN | MMC_QUIRK_BROKEN_CACHE_FLUSH), /* * Kingston EMMC04G-M627 advertises TRIM but it does not seems to |