[PATCH v2 1/2] fsl: Add binding for RCPM
Dongsheng.Wang at freescale.com
Wed Sep 16 12:15:45 AEST 2015
> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Wednesday, September 16, 2015 7:57 AM
> To: Wang Dongsheng-B40534
> Cc: devicetree at vger.kernel.org; linuxppc-dev at lists.ozlabs.org;
> robh+dt at kernel.org; linux-arm-kernel at lists.infradead.org; Wang Huan-B18965; Jin
> Zhengxiong-R64188; Zhao Chenhui-B35336; Tang Yuantian-B29983
> Subject: Re: [PATCH v2 1/2] fsl: Add binding for RCPM
> On Tue, 2015-09-15 at 16:55 +0800, Dongsheng Wang wrote:
> > +* Freescale RCPM Wakeup Source Device Tree Bindings
> > +-------------------------------------------
> > +Required rcpm-wakeup property should be added to a device node if the
> > device
> > +can be used as a wakeup source.
> > +
> > + - rcpm-wakeup: The value of the property consists of 3 cells. The first
> > cell
> > + is a pointer to the rcpm node, the second cell is the bit mask that
> > + should be set in IPPDEXPCR0, and the last cell is for IPPDEXPCR1.
> > + Note: If the platform has no IPPDEXPCR1 register, put a zero here.
> What if a future platform has more than two of these registers?
Those registers are only used for wakeup device, we have a lot of available bit
for feature. For example, In LS1021a platform only 7bits has used in the registers,
and 57bits is reserved.
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