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<dlezcano>
Hi all,
<dlezcano>
I'm trying to run my rock960 with devfreq / panfrost but I get at boot time the error:
<dlezcano>
panfrost ff9a0000.gpu: [drm:panfrost_devfreq_init] *ERROR* Couldn't set OPP regulators: -517
<dlezcano>
-517 == -EPROBE_DEFER
<macc24>
have you tried making panfrost a module?
<dlezcano>
macc24, no, just tried builtin
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<robmur01>
hmm, it shouldn't really be screaming ERROR for that case, but assuming it propagates that error code correctly it should still re-probe once the regulator driver probes and binds - does the regulator eventually turn up?
<robmur01>
(and does cpufreq on the big cluster work, as that should depend on the same regulator driver?)
<dlezcano>
macc24, as a module, it initializes successfully
<macc24>
ha, knew it
<dlezcano>
robmur01, it seems like it does no reprobe
<dlezcano>
robmur01, the cpufreq for the big cluster works
<robmur01>
does /sys/kernel/debug/devices_deferred say anything?
* macc24
noted
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<robmur01>
occasionally you can end up in a situation with something stuck on the list that *could* now probe, but there's nothing left to kick it
<robmur01>
I think I've only ever hit that with dependency chains of multiple devices though
<robmur01>
IIRC loading a module or unbinding/rebinding a driver should be a way to manually trigger a deferred probe kick
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<mps>
dlezcano: which kernel version
<mps>
I had something similar with previous kernels, 5.8 and older
<dlezcano>
robmur01, with the panfrost as module, /sys/kernel/debug/devices_deferred is empty
* dlezcano
testing with panfrost builtin
<dlezcano>
mps, v5.11-rc2
<dlezcano>
robmur01, file empty with builtin also
<mps>
dlezcano: it works for me on 5.11-rc3
<robmur01>
hmm, did it actually retry and hit some other error, or is the EPROBE_DEFER actually getting munged into something fatal by the time probe bails out? :/
<robmur01>
at a glance it *looked* like it ought to propagate correctly...
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* dlezcano
compiling v5.11-rc3
<dlezcano>
mps, it does not work for me.
<dlezcano>
mps, do you confirm it does work as builtin for you ?
<dlezcano>
robmur01, yes it seems like propagating the error correctly
<mps>
dlezcano: no, I'm using it as module, sorry for misunderstanding you
<dlezcano>
mps, thanks for confirming
<mps>
np
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