[v2,0/3] Add driver Support for MMCSD on AM654x

Message

Faiz Abbas Dec. 7, 2018, 8:11 a.m. UTC

The following patches add driver support for MMCSD on TI's AM654
platforms.

Previously I had added the support to sdhci-of-arasan driver with
a separate phy driver[1]. Since then it has turned out that tuning
operation (for HS200, HS400 and SDR104 speed modes) will require
configuration of phy registers. This completely breaks the model of
the sdhci-of-arasan driver which relies on a separate driver to
configure the phy register space.

Because of this, I am creating a new driver with both the sdhci and
phy register spaces. This helps me use the phy registers in a future
patch that adds tuning support.

DT patches will be posted in a separate series.

Changes in v2:
 1. Reset OTAP delay back to default value in init.
 2. Improved patch description for patch 2.
 3. Minor style fixes.

[1] driver and phy patches posted before
    https://patchwork.kernel.org/project/linux-mmc/list/?series=26623

Faiz Abbas (3):
  dt-bindings: mmc: sdhci-am654: Document bindings for the host
    controllers on TI's AM654 SOCs
  dt-bindings: mmc: sdhci-of-arasan: Add deprecated message for am65
  mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver

 .../devicetree/bindings/mmc/arasan,sdhci.txt  |   4 +
 .../devicetree/bindings/mmc/sdhci-am654.txt   |  37 ++
 drivers/mmc/host/Kconfig                      |  12 +
 drivers/mmc/host/Makefile                     |   1 +
 drivers/mmc/host/sdhci-of-arasan.c            |  46 ---
 drivers/mmc/host/sdhci_am654.c                | 381 ++++++++++++++++++
 6 files changed, 435 insertions(+), 46 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-am654.txt
 create mode 100644 drivers/mmc/host/sdhci_am654.c