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 16:29:04 +0100 |
| commit | d95ca9cbc5345754ee5c2300dbd0fbc1f3191623 (patch) | |
| tree | 72ca20f8b3069c85126fa7314c65ca953e1f54dc /include | |
| parent | b9c76a8a90868e84a89cd07dc7e78da6845cc37d (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 'include')
| -rw-r--r-- | include/linux/mmc/card.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index cf3780a6ccc4..572bf46ffef4 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -269,7 +269,9 @@ struct mmc_card { #define MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */ #define MMC_QUIRK_TRIM_BROKEN (1<<12) /* Skip trim */ #define MMC_QUIRK_BROKEN_HPI (1<<13) /* Disable broken HPI support */ +#define MMC_QUIRK_BROKEN_CACHE_FLUSH (1<<16) /* Don't flush cache until the write has occurred */ + bool written_flag; /* Indicates eMMC has been written since power on */ bool reenable_cmdq; /* Re-enable Command Queue */ unsigned int erase_size; /* erase size in sectors */ |