linux-kernel - Re: [PATCH v9 2/6] mfd: mp2629: Add support for mps battery charger

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Message-ID: <8ff17d07-8030-fcfe-8d8a-3011e4077778@gmail.com>
Date:   Fri, 24 Apr 2020 09:26:22 +0200
From:   saravanan sekar <sravanhome@...il.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     andy.shevchenko@...il.com, robh+dt@...nel.org, jic23@...nel.org,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        sre@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v9 2/6] mfd: mp2629: Add support for mps battery charger

Hi Lee,

On 24/04/20 9:18 am, Lee Jones wrote:
> On Wed, 15 Apr 2020, Saravanan Sekar wrote:
>
>> mp2629 is a highly-integrated switching-mode battery charge management
>> device for single-cell Li-ion or Li-polymer battery.
>>
>> Add MFD core enables chip access for ADC driver for battery readings,
>> and a power supply battery-charger driver
>>
>> Signed-off-by: Saravanan Sekar <sravanhome@...il.com>
>> ---
>>   drivers/mfd/Kconfig        |  9 ++++
>>   drivers/mfd/Makefile       |  2 +
>>   drivers/mfd/mp2629.c       | 86 ++++++++++++++++++++++++++++++++++++++
>>   include/linux/mfd/mp2629.h | 19 +++++++++
>>   4 files changed, 116 insertions(+)
>>   create mode 100644 drivers/mfd/mp2629.c
>>   create mode 100644 include/linux/mfd/mp2629.h
> How is this driver registered?
>
> Looks like it has device tree support.  Is there another way?
Yes, only using device tree
>
>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
>> index 3c547ed575e6..85be799795aa 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -434,6 +434,15 @@ config MFD_MC13XXX_I2C
>>   	help
>>   	  Select this if your MC13xxx is connected via an I2C bus.
>>   
>> +config MFD_MP2629
>> +	tristate "Monolithic power system MP2629 ADC and Battery charger"
>> +	depends on I2C
>> +	select REGMAP_I2C
>> +	help
>> +	  Select this option to enable support for monolithic power system
>> +	  battery charger. This provides ADC, thermal, battery charger power
>> +	  management functions on the systems.