ChanServ changed the topic of #armlinux to: ARM kernel talk [Upstream kernel, find your vendor forums for questions about their kernels] | https://libera.irclog.whitequark.org/armlinux
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<geertu>
maz: Sorry, I screwed up big time (was in a hurry to prep dinner for the trolls ;-)
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<maz>
geertu: trolls have utmost priority! :-)
<geertu>
maz: I'm happy you agree ;-)
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<geertu>
broonie: audio-graph-card2 is now in v5.16-rc1 and ready to be used?
<geertu>
(from the board .dts PoV)
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<broonie>
geertu: yes
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<geertu>
broonie: Am I corect that Rob and DT were dropped from the loop after v2?
<broonie>
Not that I particularly noticed.
<broonie>
but possibly
<geertu>
broonie: I didn't see any CC in lore. let's hope no rework is needed...
<broonie>
Meh, it's DT we're going to get that no matter what.
<geertu>
broonie: I appreciate your sense of realism ;-)
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<milkylainen>
What's with the "more Windows on ARM coming" rumors I hear? I know this is Linux, but if it was true then it should perhaps change things for the ARM ecosystem? More ACPI/UEFI? Or how does Windows describe ARM-machines?
<milkylainen>
Unlikely?
<steev>
they use acpi/uefi yeah
<steev>
they being, windows, not linux. my experience with their acpi tables, while limited, seems like they do the wrong thing, but what else is new
<mort>
wasn't there some arm server platform thing which would be more uefi-y
<steev>
there are a number of arm servers that use uefi already
<HdkR>
Helpful that Redhat put their foot down in the server market
<geertu>
"git grep -i phytium linux-next/master" is silent
<HdkR>
Nice that the box86 dev is getting funding from that product
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<milkylainen>
steev: Hmm. Wonder if Windows mean that more ARM vendors will provide ACPI/UEFI solutions though?
<milkylainen>
Does Windows have other means of enumeration?
<steev>
i only have 2 WoA devices, both from Lenovo, so I can't say what others do
<milkylainen>
Mkay.
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<ardb>
sadly, MS appear to have reinvented DT in ACPI
<ardb>
so they only support ACPI on ARM machines
<ardb>
and for servers, they are quite strict and only support what is covered in the UEFI and ACPI specs
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<ardb>
but on client devices such as WoA laptops, they ship with elaborate drivers for PM and configuration
<ardb>
and the ACPI tables contain lots of topology descriptions that only makes sense to that particular diver
<ardb>
driver
<ardb>
so all the WoA devices that we can support in Linux need a DT
<ardb>
as booting in ACPI mode is limited to the tiny subset of devices that can be supported in pure ACPI mode
<milkylainen>
hrrm. So not a full solution to uniform enumeration by a longshot then?
<milkylainen>
I'm split about this. DTs are better. But I'd love ARM/x86 to come to one working way of enumeration and whatnot data.
<ardb>
i don't think DTs are better tbh. they are simply two different levels of abstraction
<ardb>
DT is a pain because you need to upstream a driver for every little regulator etc
<ardb>
ACPI is very powerful because it exposes devices with abstracted PM controls
<milkylainen>
But that's hardly the fault of DTs?
<ardb>
of course it is
<milkylainen>
Classification and abstraction could be provided with DTs?
<ardb>
yes, and they even used to have a forth interpreter so DT could carry minimal drivers
<ardb>
which is basically the ACPI model as well
<ardb>
but I don't think one or the other is 'better'
<ardb>
the downside of ACPI is of course that it is 10x as easy to get wrong
<ardb>
although the main problem with shipping ACPI firmware is that OEMs only care about the windows logo
<milkylainen>
and 10x more likely for errors to stay hidden for a longer time. :)
<ardb>
well, you can easily dump and disassemble ACPI tables on any platform
<ardb>
so if you are looking for the bugs you can spot them
<milkylainen>
Mmm. But as you say. "Works With Windows"
<ardb>
(assuming the h/w is documented sufficiently but that applies equally to DT)
<ardb>
yes MS even have their own ASL compiler because they deviate from 'pure' ACPI
<ardb>
and the vendors are encouraged to use their tools
<ardb>
but the server space is very different
<milkylainen>
What do PC vendors do? Microsoft ASL or Intel(?), something else?
<ardb>
those are the only two choices
<ardb>
not sure how much they deviate these days
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<milkylainen>
I thought maybe the "bios" vendor houses had created something of their own. Dunno.
<milkylainen>
Anyway. It would be nice if some more ARM boards came with an ACPI/UEFI option.
<ardb>
the raspberry pi4 uefi/acpi port is in pretty good shape these day
<ardb>
s
<milkylainen>
Good to know.
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<Xogium>
so… trying to setup wake on lan on stm32mp157c board here, since it is supported. I can enable it fine using my network manager and I get the confirmation that it is enabled, yet using wol to send to it just doesn't work
<Xogium>
but then I noticed this in dmesg
<Xogium>
stm32-dwmac 5800a000.ethernet: IRQ eth_wake_irq not found
<Xogium>
would this explain why wol isn't working ?
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