[RESEND PATCH v2] pwm: pxa: add device tree support to pwm driver

[Thierry Reding]

On Tue, Sep 10, 2013 at 10:46:49AM -0600, Stephen Warren wrote:
> On 09/10/2013 09:54 AM, Mike Dunn wrote:
> > On 09/09/2013 02:19 PM, Stephen Warren wrote:
> >> On 09/09/2013 12:30 PM, Mike Dunn wrote:
[...]
> >>> +- reg: physical base address and length of the registers used by the pwm channel
> >>> +  NB: One device instance must be created for each pwm that is used, so the
> >>> +  length covers only the register window for one pwm output, not that of the
> >>> +  entire pwm controller.  Currently length is 0x10 for all supported devices.
> >>> +- #pwm-cells: should be 3.
> >>> +   cell 1: the per-chip index of the PWM to use,
> >>
> >> That cell shouldn't be needed if you really want to have one DT node per
> >> PWM channel.
> > 
> > Yes, but I was afraid to deviate from the format used by the other PWM
> > controllers.  (But in that case, it should at least be documented as "must be
> > zero". Thanks.)  If going my owm way is acceptable, I'll define my own
> > of_xlate() parser and remove this cell.
> 
> I don't think there's any issue with deviating; that's exactly what
> #pwm-cells is for.

Agreed, I have no objections to using a custom .of_xlate().

Thierry
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