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SubjectRe: [PATCH v5 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC
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Hi,

On 05-09-17 09:46, Takashi Iwai wrote:
> 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@linux.intel.com>
>>> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
>>> Signed-off-by: Takashi Iwai <tiwai@suse.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@linaro.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.

Since the mfd driver only instantiates platform devices there
is only a runtime dependency between the drivers AFAICT so each
driver can be merged through it own subsystem without problem /
without the need for an immutable branch, or am I missing something ?

Regards,

Hans

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