On 30 November 2011 11:41, Amit Kucheria <amit.kuche...@linaro.org> wrote: > Wow - quite a cc-list :) > > On Tue, Nov 29, 2011 at 7:47 PM, Zach Pfeffer <zach.pfef...@linaro.org> wrote: >> Amit/Mounir, >> >> What's your guys plan with cpu_idle for each board? Are you going to >> try and upstream a solution that will work across all boards? Would >> you or Mounir be open to filing a BP per board so we can track when >> cpu_idle will hit each board? Does it make sense to prototype >> something across each board that we could land in Ubuntu and Android? >> >> Adding other people, leads, etc... > > I'll add four more. > > The people I've added to cc are the ones looking at upstreaming > cpuidle for the various member platforms (the first 3 are Linaro > assignees): > > Samsung - Amit Kachhap > ST-E - Daniel Lezcano > Freescale - Rob Lee > TI - Kevin Hilman and Santosh Shilimkar > > Rob tried to upstream a driver for the imx5 platform. Russell > suggested that it is time to have a common cpuidle stub driver for > ARM[1]. > > Daniel Lezcano and Rob are currently working on such a common stub > driver. The imx5 cpuidle will get rebased on top of that. Daniel has > actively started work on a u8500 cpuidle driver in the meanwhile but > is awaiting documentation. > > For OMAP4, I was told that there was now a cpuidle driver on its way > into mainline. But I didn't find one after a cursory glance at the > lists. Perhaps Kevin/Santosh can shed some light there. The last known > tree I was aware of for an OMAP4 cpuidle driver was TI maintained > one[2]. > > For exynos, there is a basic cpuidle driver in mainline. Amit Kachhap > has been working on enhancing it[3] (adding more states and using more > of the common code that was recently added). > > In summary, we should have cpuidle working on the member platforms in > the coming month. If you want something today, you should look at > enabling OMAP4 and Exynos cpuidle configs. > > Regards, > Amit
Cool, thanks for the overview Amit. Is there a test that a QA guy can run to verify that cpu_idle is working? A set of commands and a proc node to cat out with some stats perhaps? > p.s Andy, was the breakage you reported in cpuidle related to the > missing export.h patch? > > [1] http://thread.gmane.org/gmane.linux.ports.arm.kernel/132859/focus=133279 > [2] git://gitorious.org/omap-sw-develoment/linux-omap-dev.git > for_3_2/omap4_mpuss_pm-integrated_2 > [3] http://thread.gmane.org/gmane.linux.kernel.samsung-soc/7877 -- Zach Pfeffer Android Platform Team Lead, Linaro Platform Teams Linaro.org | Open source software for ARM SoCs Follow Linaro: http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg - http://www.linaro.org/linaro-blog _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
