On Wed, Nov 23, 2011 at 6:55 AM, Andy Green <andy.gr...@linaro.org> wrote: > On 11/22/2011 08:57 PM, Somebody in the thread at some point said: >> >> On Tue, Nov 22, 2011 at 6:02 PM, Mans Rullgard<mans.rullg...@linaro.org> >> wrote: >>> >>> On 22 November 2011 05:14, Shilimkar, Santosh<santosh.shilim...@ti.com> >>> wrote: >>>> >>>> Mans, >>>> >>>> On Tue, Nov 22, 2011 at 8:15 AM, Mans Rullgard<mans.rullg...@linaro.org> >>>> wrote: >>>>> >>>>> These patches fix and tweak various cache settings for the 4460 >>>>> resulting in a speed increase exceeding 10% in some tests. >>>>> >>>>> Mans Rullgard (5): >>>>> OMAP4: apply L2 cache lockdown workaround only on 4460 ES1.0 >>>> >>>> This one is OK though the Panda were suppose to made out of es1.1 and >>>> es1.0 >>>> was not suppose to be supported. The WA is not full proof and you >>>> still might see >>>> corruption with this. Hence for mainline, we have decided not to push >>>> this >>>> patch. >>> >>> Well, currently the tilt kernel applies this to all 4460 versions, >>> twice even. This patch makes it do the right thing on both 1.0 and >>> 1.1. >>> >> I see. If it's for Linaro internal tree it's fine. > > Just a FYI TI LT tree is basis for customer for FOSS release from TI. > > What TI LT tree does for 4460 support is cobbled together and stolen from > other trees in various states of completion, it's workable at the moment but > any input from Mans or anyone else for making it better is super welcome. > >>> So keep them on by default but allow them to be turned off. In the >>> longer term, we should of course try to make these selectively >>> applied at runtime whenever possible. >>> >> Yep. That's the idea. On internal product kernels we do disable >> once which are NA for a chip. > > Issue is that for TI LT kernels, we target 4430 and 4460 support in one > build. We can't statically turn off stuff that 4430 needs. > We know and hence in mainline tree all of them are enabled so that both OMAP4430 and OMAP4460 works.
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