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Date: Wed, 04 Mar 2015 23:50:10 +0100 From: Arnd Bergmann <arnd@...db.de> To: Arun Ramamurthy <arun.ramamurthy@...adcom.com> Cc: Ray Jui <rjui@...adcom.com>, linux-arm-kernel@...ts.infradead.org, mark.rutland@....com, a.zummo@...ertech.it, sbranden@...adcom.com, pawel.moll@....com, devicetree@...r.kernel.org, ijc+devicetree@...lion.org.uk, Arun Ramamurthy <arunrama@...adcom.com>, linux-kernel@...r.kernel.org, grant.likely@...aro.org, robh+dt@...nel.org, bcm-kernel-feedback-list@...adcom.com, galak@...eaurora.org, rtc-linux@...glegroups.com Subject: Re: [PATCHv1] rtc: bcm-iproc: Add support for Broadcom iproc rtc On Wednesday 04 March 2015 14:40:13 Arun Ramamurthy wrote: > On 15-03-04 02:21 PM, Arnd Bergmann wrote: > > On Thursday 12 February 2015 14:17:41 Arun Ramamurthy wrote: > >> Hi Arnd > >> > >> My apologies for the late reply, I was moved to other work items. I > >> wanted to get more clarification on the syscon issue so that I can > >> submit the next patch set. If I understand correctly, you would like > >> me to move the CRMU logic to a new driver under mfd/ and use the syscon > >> api calls in my rtc driver? Thanks > > > > It depends a lot on what's in there, I can best advise you if you > > have some form of register list. > > > > A common approach would be to not have a driver for the crmu at all, > > but just mark it as syscon, and have the other drivers either reference > > the syscon node through a phandle, or create them as childrem of > > the syscon node. The latter case makes most sense if all uses of > > the crmu have no other MMIO registers. > > > > Thank you Arnd, I am going to follow the approach of adding a child node > to the syscon node. Several other driver use other registers in the CRMU > so I think the child node approach makes the most sense. Just to be sure we have the same understanding: of those other drivers, do you think that they would use only CRMU registers, or could there be drivers that have both CRMU as well as other MMIO registers? Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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