linux-kernel - Re: [PATCH v5 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC

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Date:   Tue, 05 Sep 2017 09:46:08 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Johannes Stezenbach <js@...21.net>,
        Hans de Goede <hdegoede@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        platform-driver-x86@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC

On Tue, 05 Sep 2017 09:24:51 +0200,
Lee Jones wrote:
> 
> On Mon, 04 Sep 2017, Takashi Iwai wrote:
> 
> > This patch adds the MFD driver for Dollar Cove (TI version) PMIC with
> > ACPI INT33F5 that is found on some Intel Cherry Trail devices.
> > The driver is based on the original work by Intel, found at:
> >   https://github.com/01org/ProductionKernelQuilts
> > 
> > This is a minimal version for adding the basic resources.  Currently,
> > only ACPI PMIC opregion and the external power-button are used.
> > 
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891
> > Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> > Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > ---
> > v4->v5:
> > * Minor coding-style fixes suggested by Lee
> > * Put GPL text
> > v3->v4:
> > * no change for this patch
> > v2->v3:
> > * Rename dc_ti with chtdc_ti in all places
> > * Driver/kconfig renames accordingly
> > * Added acks by Andy and Mika
> > v1->v2:
> > * Minor cleanups as suggested by Andy
> > 
> >  drivers/mfd/Kconfig                   |  13 +++
> >  drivers/mfd/Makefile                  |   1 +
> >  drivers/mfd/intel_soc_pmic_chtdc_ti.c | 184 ++++++++++++++++++++++++++++++++++
> >  3 files changed, 198 insertions(+)
> >  create mode 100644 drivers/mfd/intel_soc_pmic_chtdc_ti.c
> 
> For my own reference:
>   Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>

Thanks!

Now the question is how to deal with these.  It's no critical things,
so I'm OK to postpone for 4.15.  OTOH, it's really a new
device-specific stuff, thus it can't break anything else, and it'd be
fairly safe to add it for 4.14 although it's at a bit late stage.

IMO, it'd be great if you can carry all stuff through MFD tree; or
create an immutable branch (again).  But how to handle it, when to do
it, It's all up to you guys.


thanks,

Takashi