[RFC PATCH v2 00/14] initial support for "suniv" Allwinner new ARM9 SoC

[Mesih Kilinc <mesihkilinc@gmail.com>]

This is the second version of RFC patchset for Allwinner ARMv5 F1C100s
SoC. Icenowy (author of the initial patchset) allowed me to continue.
For patch 1~3 which introduces first ARMv5 Allwinner SoC I looked 
freescale,imx configs and tried to organize patches better. 
Addressed comment from Maxime Ripard and added SoC name to
compatibles and filenames. 
Addressed comment from Rob Herring and added dt-bindings.

This is my first patch. Sorry for any inconvenience :-)

Original cover later:

This is the RFC initial patchset for the "new" Allwinner SUNIV ARM9 SoC.

The same die is packaged differently, come with different co-packaged
DRAM or shipped with different SDK; and then made many model names: F23,
F25, F1C100A, F1C100S, F1C200S, F1C500, F1C600, R6, etc. These SoCs all
share a common feature set and are packaged similarly (eLQFP128 for SoCs
without co-packaged DRAM, QFN88 for with DRAM). As their's no
functionality hidden on the QFN88 models (except DRAM interface not
exported), it's not clever to differentiate them. So I will use suniv as
common name of all these SoCs.

As it's the first not ARMv7+ Allwinner SoC to get supported, this
patchset firstly made CONFIG_ARCH_SUNXI a common config item, and let
selectable CONFIG_ARCH_SUNXI_V{5,7} to internally select it. This makes
reusing most work possible. This is PATCH 1~2.

The ARM9 has neither GIC nor arch_timer, like the sun4i/5i Cortex-A8
SoCs. So adapt the IRQ and timer driver used by sun4i/5i to support
suniv. This is PATCH 3~5.

Then it's the common way to support a new SoC -- pinctrl, CCU and
initial DT.

Changes since v1:
- Patch "ARM: add CONFIG_ARCH_SUNXI_V7 for differentiate ARMv5/v7
  Allwinner SoCs"
  - Instead of using a common bool config use a common menuconfig. 
  - Use ARCH_MULTI_V7 to differentiate V7 SoCs.
  - Addressed comment from Julian Calaby
- Patch "ARM: sunxi: add Allwinner ARMv5 SoCs"
  - Use ARCH_MULTI_V5 to differentiate V5 SoCs.
  - removed "allwinner,suniv" board compatible string
  - Added dt-bindings
- Patch "irqchip/sun4i: add support for suniv interrupt controller"
  - Added dt-bindings
  - Changed "allwinner,suniv-ic" to "allwinner,suniv-f1c100s-ic"
- Patch "clocksource: sun4i: add a compatible for suniv"
  - Added dt-bindings
  - Changed "allwinner,suniv-timer" to "allwinner,suniv-f1c100s-timer"
- Patch "pinctrl: sunxi: add support for suniv F1C100s (newer F-series SoCs)"
  - Added dt-bindings
  - Renamed suniv-pinctrl to suniv-f1c100s-pinctrl
- Patch "clk: sunxi-ng: add support for suniv F1C100s SoC"
  - Added dt-bindings
  - Renamed suniv-ccu to suniv-f1c100s-ccu
- Patch "ARM: suniv: f1c100s: add device tree for Lichee Pi Nano"
  - Addressed comment from Rask Ingemann Lambertsen

Mesih Kilinc (14):
  ARM: add CONFIG_ARCH_SUNXI_V7 for differentiate ARMv5/v7 Allwinner
    SoCs
  dt-bindings: arm: Add new Allwinner ARMv5 F1C100s SoC
  ARM: sunxi: add Allwinner ARMv5 SoCs
  dt-bindings: interrupt-controller: Add suniv interrupt-controller
  irqchip/sun4i: add support for suniv interrupt controller
  dt-bindings: timer: Add Allwinner suniv timer
  clocksource: sun4i: add a compatible for suniv
  clocksource/drivers/sun4i: register as sched_clock on suniv
  dt-bindings: pinctrl: Add Allwinner suniv F1C100s pinctrl
  pinctrl: sunxi: add support for suniv F1C100s (newer F-series SoCs)
  dt-bindings: clock: Add Allwinner suniv F1C100s CCU
  clk: sunxi-ng: add support for suniv F1C100s SoC
  ARM: dts: suniv: add initial DTSI file for F1C100s
  ARM: suniv: f1c100s: add device tree for Lichee Pi Nano

 Documentation/devicetree/bindings/arm/sunxi.txt    |   1 +
 .../devicetree/bindings/clock/sunxi-ccu.txt        |   1 +
 .../interrupt-controller/allwinner,sun4i-ic.txt    |   5 +-
 .../bindings/pinctrl/allwinner,sunxi-pinctrl.txt   |   1 +
 .../bindings/timer/allwinner,sun4i-timer.txt       |   5 +-
 arch/arm/boot/dts/Makefile                         |   2 +
 arch/arm/boot/dts/suniv-f1c100s-licheepi-nano.dts  |  26 +
 arch/arm/boot/dts/suniv-f1c100s.dtsi               | 158 ++++++
 arch/arm/mach-sunxi/Kconfig                        |  39 +-
 arch/arm/mach-sunxi/Makefile                       |   3 +-
 arch/arm/mach-sunxi/sunxi_v5.c                     |  22 +
 drivers/clk/sunxi-ng/Kconfig                       |   5 +
 drivers/clk/sunxi-ng/Makefile                      |   1 +
 drivers/clk/sunxi-ng/ccu-suniv-f1c100s.c           | 536 +++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-suniv-f1c100s.h           |  34 ++
 drivers/clocksource/sun4i_timer.c                  |   5 +-
 drivers/irqchip/irq-sun4i.c                        |  47 +-
 drivers/pinctrl/sunxi/Kconfig                      |   4 +
 drivers/pinctrl/sunxi/Makefile                     |   1 +
 drivers/pinctrl/sunxi/pinctrl-suniv-f1c100s.c      | 417 ++++++++++++++++
 include/dt-bindings/clock/suniv-ccu-f1c100s.h      |  69 +++
 include/dt-bindings/reset/suniv-ccu-f1c100s.h      |  37 ++
 22 files changed, 1401 insertions(+), 18 deletions(-)
 create mode 100644 arch/arm/boot/dts/suniv-f1c100s-licheepi-nano.dts
 create mode 100644 arch/arm/boot/dts/suniv-f1c100s.dtsi
 create mode 100644 arch/arm/mach-sunxi/sunxi_v5.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-suniv-f1c100s.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-suniv-f1c100s.h
 create mode 100644 drivers/pinctrl/sunxi/pinctrl-suniv-f1c100s.c
 create mode 100644 include/dt-bindings/clock/suniv-ccu-f1c100s.h
 create mode 100644 include/dt-bindings/reset/suniv-ccu-f1c100s.h

-- 
2.7.4