Re: [PATCH v1 3/3] mfd: tps80031: Remove driver

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22.10.2021 11:05, Lee Jones пишет:
> On Thu, 21 Oct 2021, Dmitry Osipenko wrote:
> 
>> Driver was upstreamed in 2013 and never got a user, remove it.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
>> ---
>>  drivers/mfd/Kconfig          |  14 -
>>  drivers/mfd/Makefile         |   1 -
>>  drivers/mfd/tps80031.c       | 526 -----------------------------
>>  include/linux/mfd/tps80031.h | 637 -----------------------------------
>>  4 files changed, 1178 deletions(-)
>>  delete mode 100644 drivers/mfd/tps80031.c
>>  delete mode 100644 include/linux/mfd/tps80031.h
> 
>> -static const struct i2c_device_id tps80031_id_table[] = {
>> -	{ "tps80031", TPS80031 },
>> -	{ "tps80032", TPS80032 },
>> -	{ }
>> -};
> 
> This is an I2C driver, right?
> 
> I was under the impression that Linux could do auto-probing on I2C
> devices?  Such that they do not require platform code or DT in order
> to bind?
> 

It's I2C driver. I'm not sure about auto-probing because something
should provide information about device to Linux. It's possible to
detect/scan whether there is device sitting on I2C address, but there is
no auto-discovery mechanism, AFAIK.

TPS80031 device will fail to bind to this driver because it explicitly
requires platform data which should be NULL if device is probed solely
by I2C ID.



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