Hi Tony,
Am 04.10.2018 um 17:12 schrieb Tony Lindgren tony@atomide.com:
- H. Nikolaus Schaller hns@goldelico.com [181004 06:22]:
b) an old mail from March 2016 by Tony Lindgren:
- Warm reset seems to fail on igepv5, the clk code seems
to be missing clk_prepare_enable() for the abe_dpll. I need to debug this more as it seems that with LPAE reboot is still flakey on igepv5. Looks like omap5-uevm does not have this issue, but it has a newer u-boot as well.
Sorry I don't remember how I got to this conclusion, it probably was just initial gut feeling on the issue. At least I never got anything working for the reboot beyond blacklisting snd_soc_omap_abe_twl6040.
Ok, then at least we know that we are not duplicating work and just forgot to merge some known solution.
I have set up and started to learn kgdb. I can already debug the "sync" syscall as suggested by documentation...
The idea is to step beyond the known call path when modprobing pwm_omap_dmtimer. At some point there must be a write to critical control registers that influence the abe_dpll.
BR and thanks, Nikolaus