Hi Scott, > -----Original Message----- > From: Wood Scott-B07421 > Sent: Wednesday, September 16, 2015 7:57 AM > To: Wang Dongsheng-B40534 > Cc: devicet...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; > robh...@kernel.org; linux-arm-ker...@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. Regards, -Dongsheng _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
