[PATCH v6 0/8] ARM64: juno: add SCPI mailbox protocol, clock and CPUFreq support

[Sudeep Holla]

Hi ARM-SoC guys,

It has been on the list for a while and have got all the necessary ACKs.
Can you please pull this series for v4.3 ?

Regards,
Sudeep

This patch series adds support for:
  1. SCPI(System Control and Power Interface) mailbox protocol driver.
     It uses ARM MHU mailbox controller driver on Juno but can work with
     any mailbox controllers using standard mailbox APIs
  2. Add support for clocks provided by SCP firmware through the SCPI
     interface
  3. Using the existing arm_big_little cpufreq driver and the newly
     added SCPI clock driver, it also adds support for CPU DVFS on
     ARM64 JUNO development platforms.

The SCPI protocol document is available @[1],[2]

Changes v5->v6:
	- Minor review comments on clock bindings and clock driver
	- Added all the ACKs necessary

Changes v4->v5:
	- Updated the SCPI clock bindings to correct the clock specifier
	  usage and other minor updates as per review feedback
	- Updated clock driver to use SCPI specifier clock specifier
	  decode function
	- Minor reshuffling in Juno DTS files, no functionality change

Changes v3->v4:
	- Updated the SCPI binding based on MarkR's feedback
	- Updated SCPI clock driver to incorporate Stephen Boyd's review
	  comments + used clk_set_rate_range to limit the clock range
	- Since no major changes are expected in SCPI DT, updated the
	  Juno DTS to support SCPI and dependent device nodes.

Changes v2->v3:
	- Minor fix in SCPI driver and added Tixy's reviewed-by tag
	- Updated scpi clock driver to incorporate all the comments from
	  Stephen
	- Added Viresh's ack

Changes v1->v2:
	- Updated the token handling in scpi driver as per Tixy's
	  suggestion along with other review comments
	- Removed multiple drivers in scpi clock as Lorenzo suggested
	- Added free_opp_table in scpi-cpufreq as Viresh suggested
	- Separated the DT binding document
	- Moved SCPI protocol driver to drivers/firmware

[1] http://community.arm.com/servlet/JiveServlet/download/8401-45-18326/DUI0922B_scp_message_interface.pdf
[2] https://wiki.linaro.org/ARM/Juno?action=AttachFile&do=get&target=DUI0922B_scp_message_interface.pdf
v1: https://lkml.org/lkml/2015/4/27/232
v2: https://lkml.org/lkml/2015/5/14/470
v3: https://lkml.org/lkml/2015/5/27/220
v4: https://lkml.org/lkml/2015/6/8/178
v5: https://lkml.org/lkml/2015/7/23/270

Cc: devicetree at vger.kernel.org
Cc: linux-clk at vger.kernel.org
Cc: linux-pm at vger.kernel.org

Sudeep Holla (8):
  Documentation: add DT binding for ARM System Control and Power
    Interface(SCPI) protocol
  firmware: add support for ARM System Control and Power Interface(SCPI)
    protocol
  clk: add support for clocks provided by SCP(System Control Processor)
  clk: scpi: add support for cpufreq virtual device
  cpufreq: arm_big_little: add SCPI interface driver
  arm64: dts: add SRAM, MHU mailbox and SCPI support on Juno
  arm64: dts: add CPU topology on Juno
  arm64: dts: add clock support for all the cpus

 Documentation/devicetree/bindings/arm/arm,scpi.txt | 150 +++++
 MAINTAINERS                                        |  10 +
 arch/arm64/boot/dts/arm/juno-base.dtsi             |  54 ++
 arch/arm64/boot/dts/arm/juno-r1.dts                |  32 +
 arch/arm64/boot/dts/arm/juno.dts                   |  32 +
 drivers/clk/Kconfig                                |  10 +
 drivers/clk/Makefile                               |   1 +
 drivers/clk/clk-scpi.c                             | 325 ++++++++++
 drivers/cpufreq/Kconfig.arm                        |   9 +
 drivers/cpufreq/Makefile                           |   1 +
 drivers/cpufreq/scpi-cpufreq.c                     | 124 ++++
 drivers/firmware/Kconfig                           |  19 +
 drivers/firmware/Makefile                          |   1 +
 drivers/firmware/arm_scpi.c                        | 711 +++++++++++++++++++++
 include/linux/scpi_protocol.h                      |  61 ++
 15 files changed, 1540 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/arm,scpi.txt
 create mode 100644 drivers/clk/clk-scpi.c
 create mode 100644 drivers/cpufreq/scpi-cpufreq.c
 create mode 100644 drivers/firmware/arm_scpi.c
 create mode 100644 include/linux/scpi_protocol.h

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1.9.1