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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<ukleinek>
On this mt8365 machine I don't get any output when booting linux 6.15. With `earlycon=uart8250,mmio,0x11002000` I get only "[". Does this ring a bell?
<ukleinek>
oh, I guess `earlycon=mtk8250,mmio,0x11002000` is the better option. /me tries
<ukleinek>
how annoying, with that parameter the kernel boots fine
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<Xogium>
smells like a race
* ukleinek
suspects a clk issue. The problem cannot be DNS, so it's always clk :-)
* ukleinek
still ponders if he should descend into debugging that or be happy that the machine boots and do what he actually intends to do.
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<phh>
ukleinek: it's probably useless, but you could try increasing baudrate
<ukleinek>
phh: why would that help? The bootloader runs at 926100 Bd, not sure I can go faster
<Xogium>
pretty uncommon one
<phh>
reduce contention on writing logs
<ukleinek>
phh: in the error case I get no output at all, so I don't see how increasing output speed could fix anything
<phh>
if it's a race condition that is mitigated by printk() being slower, making it faster reduces that mitigation
<Xogium>
phh: sure but why would adding earlycon also "fix" it ?
<ukleinek>
phh: ah, you mean higher baudrate in combination with earlycon=uart8250,mmio,0x11002000?
<phh>
ukleinek: yes
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<ukleinek>
FTR: I once hit the hang now also with earlycon=mtk8250,mmio,0x11002000 and added keep_bootcon to cmdline