core, cpu and gated clocks for mvebu

This patchset combines code from Gregory Clement, Sebastian Hesselbarth and myself to implement core clks, cpu clock and gated clocks on Marvel MVEBU SoCs.

The Armada 370/XP core clock code is a refactored version of the already submitted and ACKed code from Gregory. It has been made to fit inside a framework developed by Sebastian which can handle all MVEBU SoCs. The Armarda 370/XP SoCs have more core clocks than the older SoCs, and the framework needs to handle this. Rather than specify the clock frequencies in DT, a Sample At Reset register is used, which describes each core clock frequency.

Armarda XP is an SMP processor, with each CPU having its own clock. Gregories code for this has been taken as is.

The Armarda 370/XP clock source has been converted to the common clock framework.

Dove, Kirkword, and probably Armarda 370/XP have the ability to gate clocks to various blocks. A clk-gate clock is created for each of the gateable clocks on Dove and Kirkwood. Armarda 370/XP clock gates are currently unimplemented. Dove and Kirkwood board-dt.c and DT descriptions are then modified to make use of these clk gates.

This code has been tested on:

Kirkwood based QNAP TS219
Armarda 370 based mirabox
Armara XP based OpenBlocks

and by Sebastian on:

Dove based Cubox.

Andrew Lunn (1):
ARM: Kirkwood: switch to DT clock providers

Gregory CLEMENT (3):
clk: mvebu: add armada-370-xp CPU specific clocks
clk: armada-370-xp: add support for clock framework
clocksource: time-armada-370-xp converted to clk framework

Sebastian Hesselbarth (3):
clk: mvebu: add mvebu core clocks.
clk: mvebu: add clock gating control provider for DT
ARM: dove: switch to DT clock providers

 .../devicetree/bindings/clock/mvebu-core-clock.txt |   47 ++
 .../devicetree/bindings/clock/mvebu-cpu-clock.txt  |   21 +
 .../bindings/clock/mvebu-gated-clock.txt           |   76 +++
 arch/arm/Kconfig                                   |    1 +
 arch/arm/boot/dts/armada-370-db.dts                |    4 -
 arch/arm/boot/dts/armada-370-xp.dtsi               |    1 +
 arch/arm/boot/dts/armada-370.dtsi                  |    7 +
 arch/arm/boot/dts/armada-xp.dtsi                   |   42 ++
 arch/arm/boot/dts/dove.dtsi                        |   20 +
 arch/arm/boot/dts/kirkwood.dtsi                    |   22 +
 arch/arm/mach-dove/Kconfig                         |    2 +
 arch/arm/mach-dove/common.c                        |   64 +-
 arch/arm/mach-kirkwood/Kconfig                     |    2 +
 arch/arm/mach-kirkwood/board-dt.c                  |   72 ++-
 arch/arm/mach-mvebu/Kconfig                        |    6 +
 arch/arm/mach-mvebu/armada-370-xp.c                |    9 +-
 arch/arm/plat-orion/include/plat/common.h          |    1 +
 drivers/clk/Kconfig                                |    2 +
 drivers/clk/Makefile                               |    1 +
 drivers/clk/mvebu/Kconfig                          |    8 +
 drivers/clk/mvebu/Makefile                         |    3 +
 drivers/clk/mvebu/clk-core.c                       |  675 ++++++++++++++++++++
 drivers/clk/mvebu/clk-core.h                       |   18 +
 drivers/clk/mvebu/clk-cpu.c                        |  155 +++++
 drivers/clk/mvebu/clk-cpu.h                        |   18 +
 drivers/clk/mvebu/clk-gating-ctrl.c                |  177 +++++
 drivers/clk/mvebu/clk.c                            |   37 ++
 drivers/clocksource/time-armada-370-xp.c           |   11 +-
 include/linux/clk/mvebu.h                          |   23 +
 29 files changed, 1487 insertions(+), 38 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/mvebu-core-clock.txt
 create mode 100644 Documentation/devicetree/bindings/clock/mvebu-cpu-clock.txt
 create mode 100644 Documentation/devicetree/bindings/clock/mvebu-gated-clock.txt
 create mode 100644 drivers/clk/mvebu/Kconfig
 create mode 100644 drivers/clk/mvebu/Makefile
 create mode 100644 drivers/clk/mvebu/clk-core.c
 create mode 100644 drivers/clk/mvebu/clk-core.h
 create mode 100644 drivers/clk/mvebu/clk-cpu.c
 create mode 100644 drivers/clk/mvebu/clk-cpu.h
 create mode 100644 drivers/clk/mvebu/clk-gating-ctrl.c
 create mode 100644 drivers/clk/mvebu/clk.c
 create mode 100644 include/linux/clk/mvebu.h