From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Rutland Subject: Re: [PATCH v4 0/5] Memory mapped architected timers Date: Mon, 22 Jul 2013 18:08:17 +0100 Message-ID: <20130722170817.GB4833@e106331-lin.cambridge.arm.com> References: <1374191972-18015-1-git-send-email-sboyd@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1374191972-18015-1-git-send-email-sboyd@codeaurora.org> Content-Language: en-US Sender: linux-arm-msm-owner@vger.kernel.org To: Stephen Boyd Cc: Daniel Lezcano , "linux-kernel@vger.kernel.org" , "linux-arm-msm@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , John Stultz , Thomas Gleixner , "devicetree-discuss@lists.ozlabs.org" , Marc Zyngier , Rob Herring List-Id: devicetree@vger.kernel.org Hi Stephen, On Fri, Jul 19, 2013 at 12:59:27AM +0100, Stephen Boyd wrote: > This patchset adds support for memory mapped architected timers. We > don't have any other global broadcast timer in our system, so we use the > mmio timer during low power modes. The first patch changes the register > accessor to an enum per Thomas' request. The second patch is the binding. > The next two patches lay some groundwork so that the last patch is simpler. > The final patch adds support for mmio timers. > > Patches are based on v3.11-rc1. Be aware that as of v3.11-rc2 this doesn't cleanly apply, as the __cpuinit removal broke the final patch's context in a couple of places. It would be nice to get rid of the new cpuinit additions too... With that cleaned up locally, I've gave this a spin on tc2 and a Foundation model to test the cp15/system timers, hotplugging CPUs and running a basic test (`time sleep 5`). That all seems to work. Unfortunately I have no way of testing the memory-mapped timer support, but I trust you've tested that locally. For the series: Acked-by: Mark Rutland Thanks, Mark. > > Updates since v3: > * Rebased onto v3.11-rc1 > * New patch to use compiler warnings instead of BUILD_BUG_ON() > > Updates since v2: > * Rebased onto v3.10-rc1 > > Updates since v1: > * Assigned counter reading function and commented why for arm64 > * Updated DT binding to replace frame-id with frame-number and use status > property > > > Stephen Boyd (5): > clocksource: arch_timer: Make register accessors less error-prone > Documentation: Add memory mapped ARM architected timer binding > clocksource: arch_timer: Pass clock event to set_mode callback > clocksource: arch_timer: Push the read/write wrappers deeper > clocksource: arch_timer: Add support for memory mapped timers > > .../devicetree/bindings/arm/arch_timer.txt | 59 ++- > arch/arm/include/asm/arch_timer.h | 14 +- > arch/arm64/include/asm/arch_timer.h | 23 +- > drivers/clocksource/arm_arch_timer.c | 446 +++++++++++++++++---- > include/clocksource/arm_arch_timer.h | 10 +- > 5 files changed, 455 insertions(+), 97 deletions(-) > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > hosted by The Linux Foundation > >