linux-kernel - [RFC PATCH 0/9] initial support for "suniv" Allwinner new ARM9 SoC

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Date:   Sat, 20 Jan 2018 07:17:26 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-sunxi@...glegroups.com,
        Icenowy Zheng <icenowy@...c.io>
Subject: [RFC PATCH 0/9] initial support for "suniv" Allwinner new ARM9 SoC

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.

Icenowy Zheng (9):
  ARM: add CONFIG_ARCH_SUNXI_V7 for differentiate ARMv5/v7 Allwinner
    SoCs
  ARM: sunxi: add Allwinner ARMv5 SoCs
  irqchip/sun4i: add support for suniv interrupt controller
  clocksource: sun4i: add a compatible for suniv
  clocksource/drivers/sun4i: register as sched_clock on suniv
  pinctrl: sunxi: add support for suniv (newer F-series SoCs)
  clk: sunxi-ng: add support for suniv SoC
  ARM: dts: suniv: add initial DTSI file for suniv and F1C100s
  ARM: suniv: f1c100s: add device tree for Lichee Pi Nano

 arch/arm/boot/dts/Makefile                        |   2 +
 arch/arm/boot/dts/suniv-f1c100s-licheepi-nano.dts |  27 ++
 arch/arm/boot/dts/suniv-f1c100s.dtsi              |   6 +
 arch/arm/boot/dts/suniv.dtsi                      | 157 +++++++
 arch/arm/configs/multi_v7_defconfig               |   2 +-
 arch/arm/configs/sunxi_defconfig                  |   2 +-
 arch/arm/mach-sunxi/Kconfig                       |  27 +-
 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.c                  | 536 ++++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-suniv.h                  |  34 ++
 drivers/clocksource/sun4i_timer.c                 |   5 +-
 drivers/irqchip/irq-sun4i.c                       |  43 +-
 drivers/pinctrl/sunxi/Kconfig                     |   4 +
 drivers/pinctrl/sunxi/Makefile                    |   1 +
 drivers/pinctrl/sunxi/pinctrl-suniv.c             | 417 +++++++++++++++++
 include/dt-bindings/clock/suniv-ccu.h             |  69 +++
 include/dt-bindings/reset/suniv-ccu.h             |  37 ++
 20 files changed, 1389 insertions(+), 11 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/boot/dts/suniv.dtsi
 create mode 100644 arch/arm/mach-sunxi/sunxi_v5.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-suniv.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-suniv.h
 create mode 100644 drivers/pinctrl/sunxi/pinctrl-suniv.c
 create mode 100644 include/dt-bindings/clock/suniv-ccu.h
 create mode 100644 include/dt-bindings/reset/suniv-ccu.h

-- 
2.14.2