diff options
| author | Avri Altman <avri.altman@sandisk.com> | 2025-11-28 08:20:11 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2026-02-23 14:06:52 +0300 |
| commit | 263ff314cc5602599d481b0912a381555fcbad28 (patch) | |
| tree | 8aaff164b356af2457f7bac3a502654afc2111c0 /include | |
| parent | 3e487a634bc019166e452ea276f7522710eda9f4 (diff) | |
| download | linux-263ff314cc5602599d481b0912a381555fcbad28.tar.xz | |
mmc: core: Add quirk for incorrect manufacturing date
Some eMMC vendors need to report manufacturing dates beyond 2025 but are
reluctant to update the EXT_CSD revision from 8 to 9. Changing the
Updating the EXT_CSD revision may involve additional testing or
qualification steps with customers. To ease this transition and avoid a
full re-qualification process, a workaround is needed. This
patch introduces a temporary quirk that re-purposes the year codes
corresponding to 2010, 2011, and 2012 to represent the years 2026, 2027,
and 2028, respectively. This solution is only valid for this three-year
period.
After 2028, vendors must update their firmware to set EXT_CSD_REV=9 to
continue reporting the correct manufacturing date in compliance with the
JEDEC standard.
The `MMC_QUIRK_BROKEN_MDT` is introduced and enabled for all Sandisk
devices to handle this behavior.
Signed-off-by: Avri Altman <avri.altman@sandisk.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mmc/card.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index e9e964c20e53..4722dd7e46ce 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -329,6 +329,7 @@ struct mmc_card { #define MMC_QUIRK_BROKEN_CACHE_FLUSH (1<<16) /* Don't flush cache until the write has occurred */ #define MMC_QUIRK_BROKEN_SD_POWEROFF_NOTIFY (1<<17) /* Disable broken SD poweroff notify support */ #define MMC_QUIRK_NO_UHS_DDR50_TUNING (1<<18) /* Disable DDR50 tuning */ +#define MMC_QUIRK_BROKEN_MDT (1<<19) /* Wrong manufacturing year */ bool written_flag; /* Indicates eMMC has been written since power on */ bool reenable_cmdq; /* Re-enable Command Queue */ |