[GIT PULL] ARM: vexpress: Updates for v4.7

[GIT PULL] ARM: vexpress: Updates for v4.7

[Sudeep Holla]

Hi ARM-SoC team,

This time addition of support for Cortex-M based MPS2 system is
the main highlight. I could not split the patches into platform,
driver and DT because it's newly added and have Kconfig/Makefile
dependency.

Please pull !

--
Regards,
Sudeep


The following changes since commit f55532a0c0b8bb6148f4e07853b876ef73bc69ca:

   Linux 4.6-rc1 (2016-03-26 16:03:24 -0700)

are available in the git repository at:

   git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git 
tags/vexpress-for-v4.7/updates

for you to fetch changes up to d6c4382919935e8354640d994d90f928096da96c:

   ARM: dts: vexpress: Add external expansion bus to DT (2016-04-15 
17:27:55 +0100)

----------------------------------------------------------------
ARMv7 Vexpress updates and fixes for v4.7

1. Basic support for ARM Versatile Express Cortex-M Prototyping System
    (V2M-MPS2). ucLinux can be now run on both the hardware and FVP
    models with Cortex-M3/M4/M7 configurations (Vladimir Murzin)

2. Support for external expansion bus useful for additional hardware
    e.g. LogicTile Express daughterboards (Brian Starkey)

3. Fix for device node name unit-address presence/absence warnings
    enabled in recently update DTC (Sudeep Holla)

----------------------------------------------------------------
Brian Starkey (1):
       ARM: dts: vexpress: Add external expansion bus to DT

Sudeep Holla (1):
       ARM: dts: vexpress: fix node name unit-address presence warnings

Vladimir Murzin (10):
       dt-bindings: document the MPS2 timer bindings
       clockevents/drivers: add MPS2 Timer driver
       dt-bindings: document the MPS2 UART bindings
       serial: mps2-uart: add MPS2 UART driver
       serial: mps2-uart: add support for early console
       ARM: vexpress/mps2: introduce MPS2 platform
       ARM: configs: add MPS2 defconfig
       ARM: dts: introduce MPS2 AN385/AN386
       ARM: dts: introduce MPS2 AN399/AN400
       MAINTAINERS: Update ARM Versatile Express platform entry

  .../devicetree/bindings/serial/arm,mps2-uart.txt   |  19 +
  .../devicetree/bindings/timer/arm,mps2-timer.txt   |  28 +
  MAINTAINERS                                        |   1 +
  arch/arm/Kconfig                                   |  12 +
  arch/arm/Makefile                                  |   1 +
  arch/arm/boot/dts/Makefile                         |   3 +
  arch/arm/boot/dts/mps2-an385.dts                   |  92 +++
  arch/arm/boot/dts/mps2-an399.dts                   |  92 +++
  arch/arm/boot/dts/mps2.dtsi                        | 241 ++++++++
  arch/arm/boot/dts/vexpress-v2m-rs1.dtsi            |  44 +-
  arch/arm/boot/dts/vexpress-v2m.dtsi                |  44 +-
  arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts        |  47 +-
  arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts         |  57 +-
  arch/arm/boot/dts/vexpress-v2p-ca5s.dts            |  37 +-
  arch/arm/boot/dts/vexpress-v2p-ca9.dts             |  41 +-
  arch/arm/configs/mps2_defconfig                    | 109 ++++
  arch/arm/mach-vexpress/Makefile                    |   4 +-
  arch/arm/mach-vexpress/Makefile.boot               |   3 +
  arch/arm/mach-vexpress/v2m-mps2.c                  |  21 +
  drivers/clocksource/Kconfig                        |   6 +
  drivers/clocksource/Makefile                       |   1 +
  drivers/clocksource/mps2-timer.c                   | 275 +++++++++
  drivers/tty/serial/Kconfig                         |  13 +
  drivers/tty/serial/Makefile                        |   1 +
  drivers/tty/serial/mps2-uart.c                     | 625 
+++++++++++++++++++++
  include/uapi/linux/serial_core.h                   |   3 +
  26 files changed, 1710 insertions(+), 110 deletions(-)
  create mode 100644 
Documentation/devicetree/bindings/serial/arm,mps2-uart.txt
  create mode 100644 
Documentation/devicetree/bindings/timer/arm,mps2-timer.txt
  create mode 100644 arch/arm/boot/dts/mps2-an385.dts
  create mode 100644 arch/arm/boot/dts/mps2-an399.dts
  create mode 100644 arch/arm/boot/dts/mps2.dtsi
  create mode 100644 arch/arm/configs/mps2_defconfig
  create mode 100644 arch/arm/mach-vexpress/Makefile.boot
  create mode 100644 arch/arm/mach-vexpress/v2m-mps2.c
  create mode 100644 drivers/clocksource/mps2-timer.c
  create mode 100644 drivers/tty/serial/mps2-uart.c

[GIT PULL] ARM: vexpress: Updates for v4.7

[Arnd Bergmann]

On Friday 15 April 2016 18:51:01 Sudeep Holla wrote:

> This time addition of support for Cortex-M based MPS2 system is
> the main highlight. I could not split the patches into platform,
> driver and DT because it's newly added and have Kconfig/Makefile
> dependency.

I don't get it. Why is there a dependency between the three things?

Usually nothing breaks by adding any of those things, so the only
dependency is that you need them all in order to make the platform
work, but that is not enough reason to put them into a common branch.

Please respin this. When you do, it probably makes sense to
separate the changes for vexpress from the new MPS2 platform
into distinct branches.

I see you got the Acks from the clockevent and serial maintainers,
but I don't see why they did not just merge those.

	Arnd

[GIT PULL] ARM: vexpress: Updates for v4.7

[Sudeep Holla]

Hi Arnd,

On 24/04/16 22:35, Arnd Bergmann wrote:
> On Friday 15 April 2016 18:51:01 Sudeep Holla wrote:
>
>> This time addition of support for Cortex-M based MPS2 system is
>> the main highlight. I could not split the patches into platform,
>> driver and DT because it's newly added and have Kconfig/Makefile
>> dependency.
>
> I don't get it. Why is there a dependency between the three things?
>

Sorry, I was just thinking from testing perspective earlier

> Usually nothing breaks by adding any of those things, so the only
> dependency is that you need them all in order to make the platform
> work, but that is not enough reason to put them into a common branch.
>

OK, I will check again. I agree nothing should break.

> Please respin this. When you do, it probably makes sense to
> separate the changes for vexpress from the new MPS2 platform
> into distinct branches.
>

OK

-- 
Regards,
Sudeep