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Date:   Tue, 24 Jan 2017 08:12:44 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Olof Johansson <olof@...om.net>
Cc:     Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        "arm@...nel.org" <arm@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Linux PWM List <linux-pwm@...r.kernel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, fabrice.gasnier@...com,
        gerald.baeza@...com, arnaud.pouliquen@...com,
        "linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: Re: [GIT PULL] Immutable branch between MFD, ARM, IIO and PWM due
 for the v4.10 merge window

On Mon, 23 Jan 2017, Olof Johansson wrote:
> On Mon, Jan 23, 2017 at 4:12 AM, Lee Jones <lee.jones@...aro.org> wrote:
> > Arm, IIO and PWM Maintainers,
> >
> > Enjoy!
> >
> > The following changes since commit 7ce7d89f48834cefece7804d38fc5d85382edf77:
> >
> >   Linux 4.10-rc1 (2016-12-25 16:13:08 -0800)
> >
> > are available in the git repository at:
> >
> >   git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git ib-mfd-arm-iio-pwm-v4.10
> >
> > for you to fetch changes up to 94df449273475980a39f1bf47f1e3d2b07ce6577:
> >
> >   ARM: dts: stm32: Enable pwm1 and pwm3 for stm32f469-disco (2017-01-23 12:06:28 +0000)
> >
> > ----------------------------------------------------------------
> > Immutable branch between MFD, ARM, IIO and PWM due for the v4.10 merge window
> >
> > ----------------------------------------------------------------
> > Benjamin Gaignard (8):
> >       dt-bindings: mfd: Add bindings for STM32 Timers driver
> >       mfd: Add STM32 Timers driver
> >       dt-bindings: pwm: Add STM32 bindings
> >       pwm: Add driver for STM32 plaftorm
> >       iio: Add bindings for STM32 timer trigger driver
> >       iio: Add STM32 timer trigger driver
> >       ARM: dts: stm32: add Timers driver for stm32f429 MCU
> >       ARM: dts: stm32: Enable pwm1 and pwm3 for stm32f469-disco
> >
> >  .../ABI/testing/sysfs-bus-iio-timer-stm32          |  29 ++
> >  .../bindings/iio/timer/stm32-timer-trigger.txt     |  23 ++
> >  .../devicetree/bindings/mfd/stm32-timers.txt       |  46 +++
> >  .../devicetree/bindings/pwm/pwm-stm32.txt          |  35 ++
> >  arch/arm/boot/dts/stm32f429.dtsi                   | 275 ++++++++++++++
> >  arch/arm/boot/dts/stm32f469-disco.dts              |  28 ++
> >  drivers/iio/trigger/Kconfig                        |   9 +
> >  drivers/iio/trigger/Makefile                       |   1 +
> >  drivers/iio/trigger/stm32-timer-trigger.c          | 342 ++++++++++++++++++
> >  drivers/mfd/Kconfig                                |  11 +
> >  drivers/mfd/Makefile                               |   2 +
> >  drivers/mfd/stm32-timers.c                         |  80 +++++
> >  drivers/pwm/Kconfig                                |   9 +
> >  drivers/pwm/Makefile                               |   1 +
> >  drivers/pwm/pwm-stm32.c                            | 398 +++++++++++++++++++++
> >  include/linux/iio/timer/stm32-timer-trigger.h      |  62 ++++
> >  include/linux/mfd/stm32-timers.h                   |  71 ++++
> >  17 files changed, 1422 insertions(+)
> >  create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
> >  create mode 100644 Documentation/devicetree/bindings/iio/timer/stm32-timer-trigger.txt
> >  create mode 100644 Documentation/devicetree/bindings/mfd/stm32-timers.txt
> >  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32.txt
> >  create mode 100644 drivers/iio/trigger/stm32-timer-trigger.c
> >  create mode 100644 drivers/mfd/stm32-timers.c
> >  create mode 100644 drivers/pwm/pwm-stm32.c
> >  create mode 100644 include/linux/iio/timer/stm32-timer-trigger.h
> >  create mode 100644 include/linux/mfd/stm32-timers.h
> 
> May I ask why you're creating an immutable branch of all this contents?
> 
> We should get the dts/dtsi contents like usual from any maintainer;
> just the DT updates in a branch.
> 
> Sometimes (but less and less due to us discouraging the use) we need
> an immutable branch that includes dt-include updates. But I don't see
> any of those in this contents.
> 
> I.e. I guess I can see the need between mfd and downstream trees
> (iio/pwm), but not the DTS contents at this time. Or am I missing
> something here?

I agree with you.  However, since one of the STM32 Maintainers Acked
the DTS patches, and the other one hasn't been heard from for months,
I took that to mean he wanted me to apply and take them through the
MFD tree.

A misunderstanding or misaction perhaps, but this is the normal
assumption.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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