[PATCH v3 0/2] mmc: core: Keep the card powered across suspend when firmware needs it live

This is v3, following Ulf's review of v2:

  Link: https://lore.kernel.org/r/[email protected]/

Background: on brcmstb boards with a Kioxia 016G01 eMMC, firmware
accesses the card directly during resume from Suspend-to-DRAM, before
the kernel's own resume path runs, in order to load boot code using
hard wired logic that is not field updatable. The card needs to stay
powered and responsive for that access to succeed.

Changes in v3:
  - Reworked the fix in _mmc_suspend() (drivers/mmc/core/mmc.c) to
    skip the poweroff-notify/sleep/power-off sequence entirely.
  - Renamed no-mmc-sleep/MMC_CAP2_NO_SLEEP_CMD to
    no-mmc-poweroff-suspend/MMC_CAP2_NO_POWEROFF_SUSPEND.

Changes in v2:
  - Replaced v1's card-level MMC_QUIRK_BROKEN_SLEEP quirk with a host
    capability and matching DT property, per Ulf's suggestion.
  - Added Reported-by/Closes tags crediting Florian.

Kamal Dasu (2):
  dt-bindings: mmc: Document no-mmc-poweroff-suspend property
  mmc: core: Add MMC_CAP2_NO_POWEROFF_SUSPEND host capability

 .../bindings/mmc/mmc-controller-common.yaml       | 10 ++++++++++
 drivers/mmc/core/host.c                           |  2 ++
 drivers/mmc/core/mmc.c                            | 15 +++++++++++++++
 include/linux/mmc/host.h                          |  1 +
 4 files changed, 28 insertions(+)

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2.34.1