From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jisheng Zhang Subject: Re: [PATCH] ARM: dts: berlin2q.dtsi: set L2CC tag and data latency as 2 cycles Date: Thu, 12 Jun 2014 18:19:19 +0800 Message-ID: <20140612181919.038012f5@xhacker> References: <1402565920-5636-1-git-send-email-jszhang@marvell.com> <20140612094423.GC23430@n2100.arm.linux.org.uk> <20140612181503.06562a38@xhacker> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140612181503.06562a38@xhacker> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Russell King - ARM Linux Cc: "robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , "pawel.moll-5wv7dgnIgG8@public.gmane.org" , "mark.rutland-5wv7dgnIgG8@public.gmane.org" , "ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org" , "galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org" , "sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" , "alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org" , "antoine.tenart-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org" , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: devicetree@vger.kernel.org Hi Russell, On Thu, 12 Jun 2014 03:15:03 -0700 Jisheng Zhang wrote: > Hi Russell, > > On Thu, 12 Jun 2014 02:44:23 -0700 > Russell King - ARM Linux wrote: > > > On Thu, Jun 12, 2014 at 05:38:40PM +0800, Jisheng Zhang wrote: > > > For all BG2Q SoCs, 2 cycles is the best/correct value > > > > It would be a good idea to set all these parameters if you need to set > > them at all - in other words, setting arm,dirty-latency as well, as > > that's all part of the timing specification. > > > > Thanks for reviewing this patch. I will check with SoC people to find the > correct dirty-latency value. The BG2Q L2 cache controller is PL310, so no "dirty-latency" Thanks, Jisheng -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html