[PATCHv2 1/3] Add support for GMT G762/G763 PWM fan controller

Arnaud Ebalard arno at natisbad.org
Sun Jun 2 11:45:58 EDT 2013


Hi,

>> I haven't noticed this issue while testing your v1 patch series because
>> at the time I was using a board with an U-Boot modified by LaCie. This
>> last sets the set_cnt register to 0 while U-Boot mainline don't.
>> Actually, the 2Big fan is not configured nor even started by U-Boot
>> mainline. I have to fix this but maybe that something can be done in
>> the g762 Linux driver too ?

At the moment, DT bindings and platform_data structure both allow
setting an initial fan_target value. I could add a 'pwm' binding for DT  
and an assoicated field in platform_data to allow passing an initial
value so that maintainers of platforms with a 2 wire fan (open loop) can
still make the fan somewhat rotate at boot.

This is related but I guess this would not completely solve your issue
though. 

Cheers,

a+



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