[PATCHv2 0/3] GE Healthcare PPD firmware upgrade driver for ACHC

[Sebastian Reichel]

Hi,

The PPD has a secondary processor from NXP, which can be programmed
from the main system. It is connected to the main processor by having
it's EzPort interface connected to the SPI bus.

This adds a generic driver to handle firmware flashing via NXP EzPort
and adds a custom compatible for the instance found in GE's device.
The reset gpio is only requested during flashing, since it is also
used for resetting other devices. A better solution for the shared
reset gpio is required at some point, but this does neither affect
the userspace interface, nor the DT interface and should not block
upstreaming this driver.

Changes since PATCHv1:
 * split DT binding update into its own patch
 * add sysfs attribute documentation
 * fix problem reported by kbuild test robot

-- Sebastian

Sebastian Reichel (3):
  dt-bindings: misc: achc: Make ezport distinguishable
  misc: ezport-firmware: new driver
  ARM: dts: imx53: PPD: Update ACHC programming interface

 Documentation/ABI/testing/sysfs-bus-spi-ezport-fw  |  23 +
 Documentation/devicetree/bindings/misc/ge-achc.txt |  19 +-
 arch/arm/boot/dts/imx53-ppd.dts                    |   5 +-
 drivers/misc/Kconfig                               |   9 +
 drivers/misc/Makefile                              |   1 +
 drivers/misc/ezport-firmware.c                     | 491 +++++++++++++++++++++
 6 files changed, 543 insertions(+), 5 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-spi-ezport-fw
 create mode 100644 drivers/misc/ezport-firmware.c

-- 
2.16.2