clk: dt: bindings for mux, divider & gate clocks

This series introduces binding definitions for common register-mapped clock multiplexer, divider and gate IP blocks along with the corresponding setup functions for matching DT data. The bindings are similar to the struct definitions but please don't hold that against the
binding: the struct definitions closely model the hardware register layout.

The delta from v3 is very small and only consists of cosmetic changes and one functional change for better error handling.

Changes since v3:
* added Tested-by & Reviewed-by from Heiko
* replaced underscores with dashes in DT property names
* bail from of clock setup function early if of_iomap fails
* removed unecessary explict cast

Mike Turquette (5):
clk: divider: replace bitfield width with mask
clk: of: helper for determining number of parent clocks
clk: dt: binding for basic multiplexer clock
clk: dt: binding for basic divider clock
clk: dt: binding for basic gate clock

 .../devicetree/bindings/clock/divider-clock.txt    |  90 +++++++++++++++
 .../devicetree/bindings/clock/gate-clock.txt       |  36 ++++++
 .../devicetree/bindings/clock/mux-clock.txt        |  79 +++++++++++++
 arch/arm/mach-imx/clk-busy.c                       |   2 +-
 drivers/clk/clk-divider.c                          | 128 ++++++++++++++++++---
 drivers/clk/clk-gate.c                             |  47 ++++++++
 drivers/clk/clk-mux.c                              |  68 ++++++++++-
 drivers/clk/clk.c                                  |   6 +
 drivers/clk/mxs/clk-div.c                          |   2 +-
 include/linux/clk-private.h                        |   2 +-
 include/linux/clk-provider.h                       |  12 +-
 11 files changed, 449 insertions(+), 23 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/divider-clock.txt
 create mode 100644 Documentation/devicetree/bindings/clock/gate-clock.txt
 create mode 100644 Documentation/devicetree/bindings/clock/mux-clock.txt

1.8.1.2