[PATCH v6 00/16] ARM: at91: move to common clk framework

[Boris BREZILLON]

Hello,

This patch series is the 5th version of the at91 clk implementations
using the Common Clk Framework.

Most of the clock provided by the PMC (Power Management Controller) are
implemented :
- main clock (main oscillator)
- pll clocks
- master clock
- programmable clocks
- utmi clock
- peripheral clocks
- system clocks

Actually some clk drivers are missing (slow clk, main clk and processor
clk), and some drivers only implement a subset of the hardware capabilities
(master clk rate change is missing).
But this series implements all the already available clks, and I will hopefully
add missing features in a near future.

This implementation is only compatible with device tree definition.
The goal is to define the whole clock tree using the device tree.

Just a note to let you know these bindings are currently unstable and might
change in the future.


Best Regards,
Boris

Changes since v5:
 - remove peripheral divisors macros from dt binding include file
 - remove file path from comment blocks
 - replace pll and utmi disable function by unprepare function to
   avoid issue when disabling and reenabling a clk
 - fix programmable clk interrupt retrieval
 - fix OF_CLK_DECLARE names (xxx_clk_main -> xxx_clk_pmc)
 - add missing comma in at91rm9200 main clk dt declaration
 - fix num_parents check in smd clk driver

Changes since v4:
 - rework dt bindings:
   * replace "atmel,clk-id" property by the standard "reg" property
   * reference system, peripheral and programmable clks using the direct
     clk node instead of the parent node plus a clk id
 - provide a new helper function (of_at91_get_clk_range) to retrieve a clk
   range from the device tree

Changes since v3:
 - simplify master clk implementation (drop set_rate/parent support)
 - fix bug in set_rate function of pll driver
 - fix coding style issues
 - define macros and constants where needed
 - remove peripheral id macro references
 - remove sam9g35 specific handling (sam9g35 = sam9x5)
 - rework main clk prepare function to handle automatic rate calculation

Changes since v2:
 - fix several bugs in clk implementations
 - drop non-dt boards support
 - split the series to ease review and tests:
   * 1 patch series for new clk implementations (this series)
   * 1 patch series to move each at91 SoC to common clk framework (coming soon)
 - modify dt-bindings (add atmel,clk- prefix to atmel specific properties)
 - add clk macros for dt-bindings
 - add pmc framework (helper function to access pmc registers)
 - add interrupt support to enable passive wait in clk_prepare functions

Changes since v1:
 - fix bugs in pll, programmable and system clock implementations
   (wrong bit position).
 - add usb clock configuration support (ohci and udc drivers +
   clk_lookup for non dt boards)
 - rework of the system clock interfaces (no need to define a parent clock,
   system clock is a gate with no rate info)
 - change system, peripheral and programmable clk dt bindings (1 master node
   and multiple child nodes each defining a system/peripheral or prog clock)
 - fix bugs in sama5 dt definition

Boris BREZILLON (16):
  ARM: at91: move at91_pmc.h to include/linux/clk/at91_pmc.h
  ARM: at91: add Kconfig options for common clk support
  clk: at91: add PMC base support
  clk: at91: add PMC macro file for dt definitions
  clk: at91: add PMC main clock
  clk: at91: add PMC pll clocks
  clk: at91: add PMC master clock
  clk: at91: add PMC system clocks
  clk: at91: add PMC peripheral clocks
  clk: at91: add PMC programmable clocks
  clk: at91: add PMC utmi clock
  clk: at91: add PMC usb clock
  clk: at91: add PMC smd clock
  dt: binding: add at91 clks dt bindings documentation
  ARM: at91: move pit timer to common clk framework
  ARM: at91: add new compatible strings for pmc driver

 .../devicetree/bindings/clock/at91-clock.txt       |  339 +++++++++++++
 arch/arm/mach-at91/Kconfig                         |   44 ++
 arch/arm/mach-at91/Kconfig.non_dt                  |    6 +
 arch/arm/mach-at91/Makefile                        |    2 +-
 arch/arm/mach-at91/at91rm9200.c                    |    2 +-
 arch/arm/mach-at91/at91sam9260.c                   |    2 +-
 arch/arm/mach-at91/at91sam9261.c                   |    2 +-
 arch/arm/mach-at91/at91sam9263.c                   |    2 +-
 arch/arm/mach-at91/at91sam926x_time.c              |   14 +-
 arch/arm/mach-at91/at91sam9g45.c                   |    2 +-
 arch/arm/mach-at91/at91sam9n12.c                   |    2 +-
 arch/arm/mach-at91/at91sam9rl.c                    |    2 +-
 arch/arm/mach-at91/at91sam9x5.c                    |    2 +-
 arch/arm/mach-at91/clock.c                         |    7 +-
 arch/arm/mach-at91/generic.h                       |    3 +-
 arch/arm/mach-at91/pm.c                            |    2 +-
 arch/arm/mach-at91/pm_slowclock.S                  |    2 +-
 arch/arm/mach-at91/sama5d3.c                       |    2 +-
 arch/arm/mach-at91/setup.c                         |    8 +-
 drivers/clk/Makefile                               |    1 +
 drivers/clk/at91/Makefile                          |   12 +
 drivers/clk/at91/clk-main.c                        |  187 +++++++
 drivers/clk/at91/clk-master.c                      |  270 ++++++++++
 drivers/clk/at91/clk-peripheral.c                  |  410 +++++++++++++++
 drivers/clk/at91/clk-pll.c                         |  531 ++++++++++++++++++++
 drivers/clk/at91/clk-plldiv.c                      |  135 +++++
 drivers/clk/at91/clk-programmable.c                |  366 ++++++++++++++
 drivers/clk/at91/clk-smd.c                         |  171 +++++++
 drivers/clk/at91/clk-system.c                      |  135 +++++
 drivers/clk/at91/clk-usb.c                         |  398 +++++++++++++++
 drivers/clk/at91/clk-utmi.c                        |  159 ++++++
 drivers/clk/at91/pmc.c                             |  397 +++++++++++++++
 drivers/clk/at91/pmc.h                             |  116 +++++
 drivers/usb/gadget/atmel_usba_udc.c                |    2 +-
 include/dt-bindings/clk/at91.h                     |   22 +
 .../include/mach => include/linux/clk}/at91_pmc.h  |    4 +-
 36 files changed, 3741 insertions(+), 20 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/at91-clock.txt
 create mode 100644 drivers/clk/at91/Makefile
 create mode 100644 drivers/clk/at91/clk-main.c
 create mode 100644 drivers/clk/at91/clk-master.c
 create mode 100644 drivers/clk/at91/clk-peripheral.c
 create mode 100644 drivers/clk/at91/clk-pll.c
 create mode 100644 drivers/clk/at91/clk-plldiv.c
 create mode 100644 drivers/clk/at91/clk-programmable.c
 create mode 100644 drivers/clk/at91/clk-smd.c
 create mode 100644 drivers/clk/at91/clk-system.c
 create mode 100644 drivers/clk/at91/clk-usb.c
 create mode 100644 drivers/clk/at91/clk-utmi.c
 create mode 100644 drivers/clk/at91/pmc.c
 create mode 100644 drivers/clk/at91/pmc.h
 create mode 100644 include/dt-bindings/clk/at91.h
 rename {arch/arm/mach-at91/include/mach => include/linux/clk}/at91_pmc.h (98%)

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1.7.9.5