Re: [PATCH 1/3] mfd: lp87565: Add lp87565 PMIC support

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On Tue, 23 May 2017, Keerthy wrote:

> 
> 
> On Tuesday 23 May 2017 02:15 PM, Lee Jones wrote:
> > On Tue, 23 May 2017, Keerthy wrote:
> >> On Tuesday 23 May 2017 12:27 PM, Lee Jones wrote:
> >>> On Tue, 23 May 2017, Keerthy wrote:
> >>>> On Monday 22 May 2017 11:18 PM, Lee Jones wrote:
> >>>>> On Fri, 19 May 2017, Keerthy wrote:
> >>>>>
> >>>>>> The LP87565 chip is a power management IC for Portable Navigation Systems
> >>>>>> and Tablet Computing devices. It contains the following components:
> >>>>>>
> >>>>>>         - Configurable Bucks(Single and multi-phase).
> >>>>>>         - Configurable General Purpose Output Signals (GPO).
> >>>>>>
> >>>>>> The LP87565-Q1 variant device uses two 2-phase outputs configuration,
> >>>>>> Buck0 is master for Buck0/1 output and Buck2 is master for Buck2/3
> >>>>>> output.
> >>>>>>
> >>>>>> Signed-off-by: Keerthy <j-keerthy@xxxxxx>
> >>>>>> ---
> >>>>>>  Documentation/devicetree/bindings/mfd/lp87565.txt |  44 ++++
> >>>>>>  drivers/mfd/Kconfig                               |  14 ++
> >>>>>>  drivers/mfd/Makefile                              |   1 +
> >>>>>>  drivers/mfd/lp87565.c                             | 103 ++++++++
> >>>>>>  include/linux/mfd/lp87565.h                       | 275 ++++++++++++++++++++++
> >>>>>>  5 files changed, 437 insertions(+)
> >>>>>>  create mode 100644 Documentation/devicetree/bindings/mfd/lp87565.txt
> >>>>>>  create mode 100644 drivers/mfd/lp87565.c
> >>>>>>  create mode 100644 include/linux/mfd/lp87565.h
> >>>>>>
> >>>
> >>> [...]
> >>>
> >>>>>> +/*
> >>>>>> + * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
> >>>>>> + *
> >>>>>> + * Author: Keerthy <j-keerthy@xxxxxx>
> >>>>>
> >>>>> We usually ask for full "first last" names.
> >>>>
> >>>> Keerthy is my full name and i do not have a surname.
> >>>
> >>> What is the 'J' for in your email address?
> >>
> >> Father's initials.
> > 
> > Okay.
> > 
> >>> [...]
> >>>
> >>>>>> +static const struct i2c_device_id lp87565_id_table[] = {
> >>>>>> +	{ "lp87565-q1", 0 },
> >>>>>> +	{ },
> >>>>>> +};
> >>>>>> +MODULE_DEVICE_TABLE(i2c, lp87565_id_table);
> >>>>>
> >>>>> Is this an OF only driver, or not?
> >>>
> >>> You didn't answer my question?
> >>
> >> Sorry i replied on top again. It will be an OF only driver.
> > 
> > Okay, then you don't need this table and you should depend on OF in
> > the Kconfig file.
> 
> Okay. Cool thanks for this info.
> 
> I am seeing this commit: 4895e493f91bff7f96f328b883c7f6448aa6abc6
> 
> mfd: Export OF module alias information in missing drivers
> 
> So no need of i2c_device_id for any of the OF-only mfd drivers?

So long as you don't depend on the .data attribute.

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