[PATCHv3 0/5] Support for Marvell AHCI interface on Armada 38x

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Tue Apr 15 08:00:01 PDT 2014


The Marvell Armada 38x ARM processors use an AHCI compatible interface
for SATA (in replacement of the Marvell-specific SATA interface,
handled by the sata_mv driver). However, like all DMA-capable Marvell
interfaces, some specific MBus window configuration must be done, so a
small specific glue layer is needed, which relies on the recently
introduced libahci_platform.c.

Changes since v2:

 * Added Acked-by from Andrew Lunn <andrew at lunn.ch> on the first

 * Added comment in the code to explain why we don't have
   suspend/resume support for now. Suggested by Bartlomiej

 * Added a ahci_mvebu_regret_option() function which enables the
   vendor-specific regret bit, which allows to solve a potential
   deadlock situation in the AHCI interface.

Changes since v1:

 * Rebased on top of v3.15-rc1

 * Added a preliminary patch that orders alphabetically the list of
   compatible strings in the DT binding document
   ahci-platform.txt. Suggested by Andrew Lunn.

 * Made the availability of MBus DRAM window informations
   mandatory. Suggested by Andrew Lunn.

 * Fixed the module alias name. Suggested by Bartlomiej

Details of the patches:

 * The first patch is a DT binding documentation cleanup. I believe it
   should be taken by the ATA maintainer, because the second patch
   (driver patch) depends on it.

 * The second patch of this series contains the driver itself, which
   is fairly straight-forward. It should be taken by Tejun Heo as the
   ATA maintainer.

 * The last three patches add the Device Tree and defconfig
   changes. They should be taken by the respective ARM maintainers
   (mvebu maintainers for the DT and mvebu_v7_defconfig, and arm-soc
   maintainers for the multi_v7_defconfig change).



Thomas Petazzoni (5):
  Documentation: dt-bindings: reformat and order list of ahci-platform
  ata: ahci_mvebu: new driver for Marvell Armada 380 AHCI interfaces
  ARM: mvebu: add Device Tree description of AHCI interfaces on Armada
  ARM: configs: add ahci_mvebu to mvebu_v7_defconfig
  ARM: configs: add ahci_mvebu to multi_v7_defconfig

 .../devicetree/bindings/ata/ahci-platform.txt      |  13 ++-
 arch/arm/boot/dts/armada-385-db.dts                |   8 ++
 arch/arm/boot/dts/armada-38x.dtsi                  |  16 +++
 arch/arm/configs/multi_v7_defconfig                |   1 +
 arch/arm/configs/mvebu_v7_defconfig                |   1 +
 drivers/ata/Kconfig                                |   9 ++
 drivers/ata/Makefile                               |   1 +
 drivers/ata/ahci_mvebu.c                           | 127 +++++++++++++++++++++
 8 files changed, 172 insertions(+), 4 deletions(-)
 create mode 100644 drivers/ata/ahci_mvebu.c


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