mbox series

[v5,0/4] Add ARTPEC-8 support to DWMMC controller

Message ID 20211220113026.21129-1-marten.lindahl@axis.com
Headers show
Series Add ARTPEC-8 support to DWMMC controller | expand

Message

Mårten Lindahl Dec. 20, 2021, 11:30 a.m. UTC 
Hi!

The ARTPEC-8 SoC has a DWMMC controller that is compatible with the
Exynos 7 version v2.70a. The main differences from Exynos 7 is that it
does not support HS400 and has an extended data read timeout. To run
this controller we need to add compatibility for ARTPEC-8, because we
need to separate the configuration of the TMOUT register from the non
ARTPEC-8 versions.

This patchset is dependent on 2 changes that has been added to the mmc
git next branch, but has not yet been merged to mainline:

Patch 2 of this patchset depends on commit 0e6f2c4c2072b ("mmc: dw_mmc:
add common capabilities to replace caps").

Patch 3 of this patchset depends on commit d5bc33487eab3 ("mmc: dw_mmc:
Allow lower TMOUT value than maximum").

Kind regards
Mårten Lindahl

Changes in v2:
 - Change compatible string vendor prefix
 - Removed unnecessary comment
 - Change 1<<0 to BIT(0)

Changes in v3:
 - Add callback for implementation specific control of data timeout
 - Add callback for implementation specific read of cycle count for
   data timeout.
 - Move definition of DW_MMC_QUIRK_EXTENDED_TMOUT from patch 3/4 to
   patch 4/4.

Changes in v4:
 - Add Reviewed-by and Acked-by tags from Krzysztof Kozlowski

Changes in v5:
 - Remove redundant '0x' prefix from debug message
 - Add Acked-by tag by Rob Herring

Mårten Lindahl (4):
  dt-bindings: mmc: exynos-dw-mshc: Add support for ARTPEC-8
  mmc: dw_mmc-exynos: Add support for ARTPEC-8
  mmc: dw_mmc: Add driver callbacks for data read timeout
  mmc: dw_mmc: Do not wait for DTO in case of error

 .../bindings/mmc/exynos-dw-mshc.txt           |   2 +
 drivers/mmc/host/dw_mmc-exynos.c              | 101 ++++++++++++++++--
 drivers/mmc/host/dw_mmc.c                     |  21 +++-
 drivers/mmc/host/dw_mmc.h                     |  10 ++
 4 files changed, 122 insertions(+), 12 deletions(-)