On Wed, Jun 11, 2014 at 8:58 PM, Kukjin Kim <kgene.kim@xxxxxxxxxxx> wrote: > On 06/12/14 00:19, Doug Anderson wrote: >> >> Chander, >> >> On Tue, Jun 10, 2014 at 9:52 PM, Chander Kashyap<k.chander@xxxxxxxxxxx> >> wrote: >>> >>> Hi Doug, >>> >>> On Tue, Jun 10, 2014 at 9:19 PM, Nicolas Pitre<nicolas.pitre@xxxxxxxxxx> >>> wrote: >>>> >>>> On Tue, 10 Jun 2014, Doug Anderson wrote: >>>> >>>>> My S-state knowledge is not strong, but I believe that Lorenzo's >>>>> questions matter if we're using S2 for CPUidle (where we actually turn >>>>> off power and hot unplug CPUs) but not when we're using S1 for CPUidle >>>>> (where we just enter WFI/WFE). >>>>> >>> >>> No Its not plain WFI. >>> >>> All cores in Exynos5420 can be powered off independently. >>> This functionality has been tested. >>> >>> Below is the link for the posted patches. >>> >>> https://lkml.org/lkml/2014/6/10/194 >>> >>> And as Nicolas wrote, these patches need MCPM for that. >> >> >> Most excellent! I should have been more clear that I only knew about >> how CPUidle worked in our local production kernel. There I'm pretty >> sure CPUidle is just WFI/WFE. If you've got patches to do better then >> that's great! >> >> ...can you confirm that my patch doesn't interfere with your improved >> CPUidle? It's been Acked by Nicolas (thanks!) so I'd imagine it will >> land shortly. Kukjin: I assume you'll be taking this? >> This patch is effectively changing the mcpm_entry_point address from nsbase + 0x1c to nsbase + 0x8 Hence while integrating with mainline u-boot we need to take care for new mcpm_entry_point address. With Chromebook it works straightforward. > Sure, I will ;-) > > Thanks, > Kukjin > > -- > To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html