22.04.2020 16:59, Jon Hunter пишет: > > On 22/04/2020 14:40, Dmitry Osipenko wrote: >> 21.04.2020 22:42, Jon Hunter пишет: >>> >>> On 21/04/2020 16:08, Dmitry Osipenko wrote: >>>> 21.04.2020 17:40, Jon Hunter пишет: >>>>> >>>>> On 21/04/2020 14:25, Dmitry Osipenko wrote: >>>>>> 21.04.2020 12:49, Jon Hunter пишет: >>>>>> ... >>>>>>> I can try the above, but I agree it would be best to avoid messing with >>>>>>> the suspend levels if possible. >>>>>> >>>>>> Will be awesome if you could try it and report back the result. >>>>>> >>>>> >>>>> I gave it a try but suspend still fails. >>>> >>>> Perhaps the RPM's -EACCES is returned from here: >>>> >>>> https://elixir.free-electrons.com/linux/v5.7-rc2/source/drivers/base/power/runtime.c#L723 >>>> >>>> Which suggests that I2C is accessed after being suspended. I guess the >>>> PCIe driver suspends after the I2C and somehow my change affected the >>>> suspension order, although not sure how. >>>> >>>> Jon, could you please try to enable PM logging and post the log? Please >>>> also post log of the working kernel version, so that we could compare >>>> the PM sequence. >>>> >>>> Something like this should enable the logging: "echo 1 > >>>> /sys/power/pm_trace" + there is RPM tracing. >>> >>> Unfortunately, after enabling that I don't any output and so no help there. >> >> 1. I now tried to check the pm_trace myself and found that it's >> available only on X86, my bad. >> >> 2. Jon, could you please clarify what exactly you were trying to test? >> >> 3. Is it only the Cardhu board that is affected by this problem? >> >> 4. Could you please try to add this to the kernel's cmdline and post the >> logs: >> >> tp_printk >> trace_event=rpm_suspend,rpm_resume,rpm_usage,rpm_idle,rpm_return_int > > > So I think that part of the problem already existed prior to these > patches. Without your patches I see ... > > [ 59.543528] tegra-i2c 7000d000.i2c: i2c transfer timed out Does this I2C timeout happen with my patches? Could you please post full logs of an older and the recent kernel versions? > [ 59.549036] vdd_sata,avdd_plle: failed to disable > > [ 59.553778] Failed to disable avdd-plle: -110 > > [ 59.558150] tegra-pcie 3000.pcie: failed to disable regulators: -110 > > > However, now with your patches the i2c is failing to resume and this > breaks system suspend completely for Tegra30. So far this is the only > board that appears to break. > > So the above issue needs to be fixed and I will chat to Thierry about this. Okay
