Stefan Wahren <[email protected]> writes: > Hi Eric, > >> Stefan Wahren <[email protected]> hat am 14. August 2017 um 19:11 >> geschrieben: >> >> >> Hi Florian, >> >> > Florian Fainelli <[email protected]> hat am 14. August 2017 um 18:25 >> > geschrieben: >> > >> > >> > >> > >> > On 08/08/2017 04:04 AM, Phil Elwell wrote: >> > > Secondary cores should enter a low-power idle state when waiting to >> > > be started. The "wfe" instruction causes a core to wait until an event >> > > or interrupt arrives before continuing to the next instruction, and >> > > the "sev" instruction sends a wakeup event to the other cores. >> > > >> > > Add an "sev" (and a memory barrier) to bcm2836_boot_secondary, the >> > > function that wakes the waiting cores during booting. This is required >> > > if the secondary cores are sitting in "wfe", and harmless if not. >> > >> > Eric, should I just pick this up for the upcoming ARM SoC pull requests >> > that I am preparing, or do you have more changes aside from the two tags >> > I already merged? >> >> this patch depends on series "ARM: bcm2836: Move SMP startup code to >> arch/arm". >> >> I didn't had the time to test Phil's patch in all relevant cases. But i >> could at least prepare a branch with my changes with the acks. > > i prepared the branches bcm2835-dt-next-v2 and bcm2835-soc-next.
bcm2835-soc-next on its own breaks boot for me on the Pi2, so I had to merge in the DT branch first. I've rebased to do that, pulled in this patch (and the clk one), and sent PRs for -dt and -soc.
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