[PATCH v4 0/4] Add support for the Allwinner A31 Reset Controllers

[Maxime Ripard]

Hi everyone,

This patchset adds support for the reset controllers found in the Allwinner A31
SoCs. Since these controllers are pretty simple, basically just a few MMIO
registers, with a single bit controlling the reset state of the other devices
it asserts in reset, the driver is quite simple as well.

However, one of the IPs asserted in reset by these controllers are the timers,
the only thing standing out is that it requires to be registered before the
timers are initialized.

Thanks,
Maxime

Changes from v3:
  - Added some locking
  - Added back the sun6i compatible and the request_mem_region

Changes from v2:
  - Changed the commit logs to be a bit more generic
  - Fixed a stupid breakage in the Makefile

Changes from v1:
  - Don't call request_mem_region, since some of these controllers will share
    registers with clock drivers
  - Switched to a more generic allwinner,sun4i-clock-reset compatible, since a
    lot of these controllers are found in other SoCs than the A31
  - Switched to a "real" driver using the device model for all these reset
    controllers but the one that needs to be initialised early.
  - Fixed a typo in one of the DT bindings that was leading to a compilation
    breakage

Maxime Ripard (4):
  reset: Add Allwinner SoCs Reset Controller Driver
  ARM: sunxi: Select ARCH_HAS_RESET_CONTROLLER
  ARM: sunxi: Register the A31 reset IP in init_time
  ARM: sun6i: Add the reset controller to the DTSI

 arch/arm/boot/dts/sun6i-a31.dtsi |  24 ++++++
 arch/arm/mach-sunxi/Kconfig      |   1 +
 arch/arm/mach-sunxi/sunxi.c      |  10 ++-
 drivers/reset/Makefile           |   1 +
 drivers/reset/reset-sunxi.c      | 175 +++++++++++++++++++++++++++++++++++++++
 5 files changed, 210 insertions(+), 1 deletion(-)
 create mode 100644 drivers/reset/reset-sunxi.c

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1.8.4.2