Tartarus changed the topic of #u-boot to: SOURCE MOVED TO https://source.denx.de/u-boot/u-boot.git / U-Boot v2022.01, v2022.04-rc2 are OUT / Merge Window is CLOSED / Release v2022.04 is scheduled for 4 April 2022 / http://www.denx.de/wiki/U-Boot / Channel archives at https://libera.irclog.whitequark.org/u-boot
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<sjg1> milkylainen: OK, not sure if that is the issue though. Does it actually jump to Linux?
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<kettenis> that is now fully in-synch with the DTs on the asahi branch of the linux kernel repo
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<kettenis> oops, didn't intend that for this channel, but it is still on-topic ;)
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<mps> kettenis: I confirm that it works
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<marex> kettenis: how is the m1 machine performance-wise ? is it build-machine material ?
<mps> marex: 'build-machine material', what that means
<kettenis> performance is comparable with a fast x86 laptop I'd say
<marex> mps: something you can do e.g. kernel builds on
<kettenis> absolutely
<mps> marex: sure, I build kernel in less than 5 minutes usually
<kettenis> my M1 machines do an OpenBSD kernel build in less than 2 minutes and a full build of the base OS in just over an hour (that includes building clang)
<kettenis> it is faster than the 32-core Ampere eMAG machine I have ;)
<mps> hmm, with these Jens's patches I should try again to see is it faster
<marex> I was about to point out 5 minutes isn't very quick
<marex> but with cpufreq, it looks better indeed
<marex> j`ey: that ... looks nice
<mps> marex: well, on my alpine develepment neoverse-m1 it takes about 10-15 minutes
<kettenis> marex: now that I have your attention; any thoughts on https://patchwork.ozlabs.org/project/uboot/patch/20211224232216.56847-1-kettenis@openbsd.org/
<kettenis> ?
<marex> kettenis: get AB/RB from Bin Meng and I'll pick it, he's doing the usb3 stuff
<mps> ah, and I set conservative governor usually
<marex> kettenis: just CC him if you didn't already, and ask for AB/RB, it should be quick
<kettenis> marex: ok; I made it an RFC because I'm not sure how u-boot wants to pick up the role switch stuff that Linux has
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<marex> kettenis: the usb2 parts already do role switch, so why not ?
<marex> the usb stack is also partly pulled from linux already
<marex> that could make things easier too
<kettenis> well, I'm not really interested in adding full role-switch support; just in making sure that we pick up host mode if that's what the device tree says
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<mps> I forgot to tell that I build on kernel with 4K page size, which is slower than default 16K
<mps> and ofc speed of kernel build depends how much modules/options are enabled in config
<marex> kettenis: ah, that, so host/peripheral yes, but not otg
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<tg-bridge-bot-ub> <C​lamor_S> why CONFIG_SKIP_LOWLEVEL_INIT gives +10mb of size to image
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<milkylainen_> marex: It's about as fast as a latest generation x86, but easily wins out on perf/W. 5nm production has advantages. :)
<marex> milkylainen_: so how does it compare e.g. to RPi4 ? :)
<marex> (that might be something more people have access to)
<j`ey> muccccch faster
<j`ey> my kernel build on rpi is 30mins+, 1-2min on m1
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<marex> the m1 has what, 8 cores ? rpi4 has 2 A72 ?
<marex> so that's like 4 times faster per core ?
<j`ey> rpi4 has 4 cores
<marex> 4 A72 then ?
<marex> and you build from some pcie ssd in both cases ?
<marex> or NFSroot ?
<j`ey> thats where the comparison breaks down, my rpi has much worse storage
<milkylainen_> marex: That is pretty much comparing apples to oranges. The bcm2711 suffer so badly compared to a desktop class CPU. :)
<marex> milkylainen_: that's like comparing apples and raspberries ... is what you wanted to say ?
<marex> j`ey: so rpi has memory bandwidth / pcie bandwidth issues ? hah ...
<marex> oh well
<kettenis> a cluster of rpi4's probably still beats the M1 for performance per peso
<mps> marex: I build sometimes kernel on rk3399 (samsung gru-kevin chromebook) with FS on external usb-c 3.1 speed ssd disk
<mps> it takes about 30-45 minutes
<mps> maybe even more, I didn't built kernel on it for about year
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