[v2,0/2] mmc: sdhci-milbeaut: add Milbeaut SD driver

Message

Takao Orito May 30, 2019, 9:20 a.m. UTC

The following patches add driver for SD Host controller on
Socionext's Milbeaut M10V platforms.

SD Host controller on Milbeaut consists of two controller parts.
One is core controller F_SDH30, this is similar to sdhci-fujitsu
controller.
Another is bridge controller. This bridge controller is not compatible
with sdhci-fujitsu controller. This is special for Milbeaut series.

It has the several parts,
 - reset control
 - clock enable / select for SDR50/25/12
 - hold control of DATA/CMD line
 - select characteristics for WP/CD/LED line
 - Re-tuning control for mode3
 - Capability setting
   Timeout Clock / Base Clock / Timer Count for Re-Tuning /
   Debounce period
These requires special procedures at reset or clock enable/change or
 further tuning of clock.

Takao Orito (2):
  dt-bindings: mmc: add DT bindings for Milbeaut SD controller
  mmc: sdhci-milbeaut: add Milbeaut SD controller driver

 .../devicetree/bindings/mmc/sdhci-milbeaut.txt     |  32 ++
 drivers/mmc/host/Kconfig                           |  11 +
 drivers/mmc/host/Makefile                          |   1 +
 drivers/mmc/host/sdhci-milbeaut.c                  | 362 +++++++++++++++++++++
 drivers/mmc/host/sdhci_f_sdh30.c                   |  26 +-
 drivers/mmc/host/sdhci_f_sdh30.h                   |  32 ++
 6 files changed, 439 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-milbeaut.txt
 create mode 100644 drivers/mmc/host/sdhci-milbeaut.c
 create mode 100644 drivers/mmc/host/sdhci_f_sdh30.h