On 30.10.19 07:11, Martin Kepplinger wrote: > On 23.06.19 13:47, Martin Kepplinger wrote: >> On 10.06.19 14:13, Abel Vesa wrote: >>> This is another alternative for the RFC: >>> https://lkml.org/lkml/2019/3/27/545 >>> >>> This new workaround proposal is a little bit more hacky but more contained >>> since everything is done within the irq-imx-gpcv2 driver. >>> >>> Basically, it 'hijacks' the registered gic_raise_softirq __smp_cross_call >>> handler and registers instead a wrapper which calls in the 'hijacked' >>> handler, after that calling into EL3 which will take care of the actual >>> wake up. This time, instead of expanding the PSCI ABI, we use a new vendor SIP. >>> >>> I also have the patches ready for TF-A but I'll hold on to them until I see if >>> this has a chance of getting in. >> > > Hi Abel, > > Running this workaround doesn't seem to work anymore on 5.4-rcX. Linux > doesn't boot, with ATF unchanged (includes your workaround changes). I > can try to add more details to this... > When I run this change instead: https://source.puri.sm/Librem5/linux-next/commit/e59807ae0e236512761b751abc84a9b129d7fcda (again, with the same ATF) Linux 5.4 boots, but simply doesn't load a cpuidle driver (cpu-sleep; and cpuidle in /sys/devices/system/cpu/cpu0). Still, since this is starting with 5.4-rcX, my previous questions stay the same :) thanks, martin
