Change in v4:
- split driver patch into a core patch and a mtk-sd patch
- use mmc_get_ext_csd function
- move mmc_get_ext_csd() to include/linux/mmc/host.h
- modify some commit message.

Change in v3:
- add detail descripthion for hs400 dly3

Change in v2:
- remove the check "mmc_can_ext_csd"
- change the hs400 tuning condition for "msdc_cmd_done" function and
"msdc_cmd_next" function
- use "-EIO" instead of "-ERANGE"

Wenbin Mei (3):
  dt-bindings: mmc: mtk-sd: add hs400 dly3 setting
  mmc: core: add tuning support for HS400 mode
  mmc: mediatek: Add HS400 online tuning support

 .../devicetree/bindings/mmc/mtk-sd.yaml       | 12 +++
 drivers/mmc/core/mmc.c                        |  8 ++
 drivers/mmc/core/mmc_ops.h                    |  1 -
 drivers/mmc/host/mtk-sd.c                     | 79 ++++++++++++++++++-
 include/linux/mmc/host.h                      |  4 +
 5 files changed, 101 insertions(+), 3 deletions(-)

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2.25.1