[PATCH v5 00/17] ARM: at91: move to common clk framework

* [PATCH v5 00/17] ARM: at91: move to common clk framework
@ 2013-11-12 20:51 Boris BREZILLON
  2013-11-12 20:55 ` [PATCH v5 01/17] ARM: at91: move at91_pmc.h to include/linux/clk/at91_pmc.h Boris BREZILLON
                   ` (17 more replies)
  0 siblings, 18 replies; 22+ messages in thread
From: Boris BREZILLON @ 2013-11-12 20:51 UTC (permalink / raw)
  To: Rob Herring, Pawel Moll, Mark Rutland, Stephen Warren,
	Ian Campbell, Rob Landley, Andrew Victor, Nicolas Ferre,
	Jean-Christophe Plagniol-Villard, Russell King, Mike Turquette,
	Felipe Balbi, Greg Kroah-Hartman, Grant Likely,
	Ludovic Desroches, Josh Wu, Richard Genoud
  Cc: Boris BREZILLON, devicetree, linux-doc, linux-kernel,
	linux-arm-kernel, linux-usb

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.

BTW, could a dt maintainer take a look at these dt bindinds ?

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

Mike, I know you already acked the previous version, but I slighty changed
the dt bindings, according to some feedbacks I got during ELCE.
Could you take a look at this new version (at least the new dt bindings),
and add your acked-by if you agree with these changes ?

Best Regards,
Boris

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 (17):
  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 peripheral clk macros for peripheral clk dt bindings
  clk: at91: add PMC programmable clocks
  clk: at91: add PMC utmi clock
  clk: at91: add PMC usb clock
  clk: at91: add PMC smd clock
  clk: at91: add PMC clk device tree binding doc.
  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                        |  189 +++++++
 drivers/clk/at91/clk-master.c                      |  272 ++++++++++
 drivers/clk/at91/clk-peripheral.c                  |  412 +++++++++++++++
 drivers/clk/at91/clk-pll.c                         |  534 ++++++++++++++++++++
 drivers/clk/at91/clk-plldiv.c                      |  137 +++++
 drivers/clk/at91/clk-programmable.c                |  368 ++++++++++++++
 drivers/clk/at91/clk-smd.c                         |  173 +++++++
 drivers/clk/at91/clk-system.c                      |  137 +++++
 drivers/clk/at91/clk-usb.c                         |  400 +++++++++++++++
 drivers/clk/at91/clk-utmi.c                        |  162 ++++++
 drivers/clk/at91/pmc.c                             |  399 +++++++++++++++
 drivers/clk/at91/pmc.h                             |  116 +++++
 drivers/usb/gadget/atmel_usba_udc.c                |    2 +-
 include/dt-bindings/clk/at91.h                     |   28 +
 .../include/mach => include/linux/clk}/at91_pmc.h  |    4 +-
 36 files changed, 3771 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%)

-- 
1.7.9.5

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