Contributor meeting notes 19-Jan-21

[Michal Simek]

On 1/20/21 4:44 PM, Simon Glass wrote:
> Hi Michal,
> 
> On Wed, 20 Jan 2021 at 00:46, Michal Simek <michal.simek at xilinx.com> wrote:
>>
>> Hi,
>>
>> On 1/19/21 7:54 PM, Simon Glass wrote:
>>> Hi,
>>>
>>> Thank you for attending!
>>>
>>> Full notes at [1]
>>>
>>> Tuesday 19 January 2021
>>>
>>> Present: Daniel Schwierzeck, Heinrich Schuchardt, Michal Simek, Sean
>>> Anderson, Simon Glass, Walter Lozano
>>>
>>> Notes:
>>> [all] Introductions
>>> [all] Timing of call
>>> - Current time is the best across US, Europe, India. But not any good
>>> for East Asia
>>> - Simon might send out survey
>>> - Send invitation to maintainer group - DONE
>>> [Simon] New sequence numbers
>>
>> I can't see any issue with it on zynqmp platform. There is only issue
>> with i2c which was there for quite a long time that i2c mux is
>> considered as chip on the subbus as is visible below.
> 
> Do you mean the naming of the device, or something else? What happens
> if you type 'i2c bus'?

If look at log below. mux is at address 74 which is i2c_mux_bus_drv
and when you run i2c dev <any i2c mux channel> and run i2c probe i2c mux
itself is assigned to to i2c_generic_chip_drv.
Below you see it multiple times as generic_74 with ID 2/8/12/14/20. All
of them are just targeting i2c mux.

Thanks,
Michal

> 
>>
>>   i2c           0  [ + ]   i2c_cdns              |   |-- i2c at ff030000
>>   gpio          1  [ + ]   pca953x               |   |   |-- gpio at 20
>>   i2c_mux       0  [ + ]   pca954x               |   |   `-- i2c-mux at 74
>>   i2c           1  [ + ]   i2c_mux_bus_drv       |   |       |--
>> i2c at ff030000->i2c-mux at 74->i2c at 0
>>   i2c_eeprom    0  [ + ]   i2c_eeprom            |   |       |   `--
>> eeprom at 54
>>   i2c           2  [ + ]   i2c_mux_bus_drv       |   |       |--
>> i2c at ff030000->i2c-mux at 74->i2c at 1
>>   i2c_generi    0  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_20
>>   i2c_generi    1  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_6c
>>   i2c_generi    2  [ + ]   i2c_generic_chip_drv  |   |       |   `--
>> generic_74
>>   i2c           3  [ + ]   i2c_mux_bus_drv       |   |       |--
>> i2c at ff030000->i2c-mux at 74->i2c at 2
>>   i2c_generi    3  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_13
>>   i2c_generi    4  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_14
>>   i2c_generi    5  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_20
>>   i2c_generi    6  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_43
>>   i2c_generi    7  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_44
>>   i2c_generi    8  [ + ]   i2c_generic_chip_drv  |   |       |   `--
>> generic_74
>>   i2c           4  [ + ]   i2c_mux_bus_drv       |   |       |--
>> i2c at ff030000->i2c-mux at 74->i2c at 3
>>   i2c_generi    9  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_0
>>   i2c_generi   10  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_20
>>   i2c_generi   11  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_40
>>   i2c_generi   12  [ + ]   i2c_generic_chip_drv  |   |       |   `--
>> generic_74
>>   i2c           5  [ + ]   i2c_mux_bus_drv       |   |       |--
>> i2c at ff030000->i2c-mux at 74->i2c at 5
>>   i2c_generi   13  [ + ]   i2c_generic_chip_drv  |   |       |   |--
>> generic_20
>>   i2c_generi   14  [ + ]   i2c_generic_chip_drv  |   |       |   `--
>> generic_74
>>   i2c           6  [ + ]   i2c_mux_bus_drv       |   |       `--
>> i2c at ff030000->i2c-mux at 74->i2c at 7
>>   i2c_generi   15  [ + ]   i2c_generic_chip_drv  |   |           |--
>> generic_19
>>   i2c_generi   16  [ + ]   i2c_generic_chip_drv  |   |           |--
>> generic_20
>>   i2c_generi   17  [ + ]   i2c_generic_chip_drv  |   |           |--
>> generic_36
>>   i2c_generi   18  [ + ]   i2c_generic_chip_drv  |   |           |--
>> generic_37
>>   i2c_generi   19  [ + ]   i2c_generic_chip_drv  |   |           |--
>> generic_51
>>   i2c_generi   20  [ + ]   i2c_generic_chip_drv  |   |           `--
>> generic_74
> 
> Regards,
> Simon
>