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

saravanan sekar
2020-04-24T10:24:09Z

Hi Lee,

On 24/04/20 11:37 am, Lee Jones wrote:
> On Fri, 24 Apr 2020, saravanan sekar wrote:
>
>> 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@gmail.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
> Then how about using 'simple-mfd' and 'syscon'?
>
> Then you can omit this driver completely.
The exception is to support for non device tree platform as well, but I
have tested only for ARM device tree platform.
>
>>>> 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.