From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [GIT PULL] omap changes for v2.6.39 merge window Date: Wed, 06 Apr 2011 12:13:54 +0530 Message-ID: <4D9C0BAA.40602@ti.com> References: <201104031726.37420.arnd@arndb.de> <20110403160324.GA8050@n2100.arm.linux.org.uk> <201104040259.26601.arnd@arndb.de> <1301915022.15819.28.camel@e102109-lin.cambridge.arm.com> <20110404112104.GB19854@n2100.arm.linux.org.uk> <1301923457.417.34.camel@e102391-lin.cambridge.arm.com> <20110404133104.GA23266@n2100.arm.linux.org.uk> <1301925445.417.54.camel@e102391-lin.cambridge.arm.com> <4D9AB958.5010304@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Linus Walleij Cc: david@lang.hm, Russell King - ARM Linux , Arnd Bergmann , Nicolas Pitre , Marc Zyngier , Catalin Marinas , lkml , Tony Lindgren , linux-arm-kernel@lists.infradead.org, "H. Peter Anvin" , Thomas Gleixner , linux-omap@vger.kernel.org, Linus Torvalds , Ingo Molnar , Detlef Vollmann , David Brown , Stephen Boyd List-Id: linux-omap@vger.kernel.org On 4/6/2011 3:46 AM, Linus Walleij wrote: > 2011/4/5 Santosh Shilimkar: >> [Me] >>> (And third it will also eventually need to hook into the timer-based >>> delay framework that I think Nokia is working on to be really >>> useful, else all delays become unpredictable.) >>> >> Do you mean udelay()/mdelay() here ? > > Yes. Stephen Boyd from Qualcomm has floated patches to fix it for the > ARM architecture, I just pushed him again. We use it in our > ST-Ericsson products. > I remember the post. > Ideally you'd want that to go along with the A15 timer stuff so that this > monotonic high-precision timer is also used for udelay()/mdelay(). > The A15 counter which is always available and running can be used to emulate this. Regards Santosh