On Tue, Nov 8, 2011 at 1:42 PM, Matthew Garrett <mj...@srcf.ucam.org> wrote:

> I feel like I'm missing something here. Where's the firmware getting its
> initial value from?


My understanding is that normally, the firmware's VBIOS can program the
value of the PWM register.  But if the firmware doesn't have the VBIOS
initialization code, it can still provide an initial value using this new
param, as part of the kernel command line.  Either way, it's up to the
person writing or selecting the firmware to decide what initial value to
provide.

Simon
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