#linux-rockchip on 2019-04-12 — irc logs at freenode.irclog.whitequark.org

2017-05-08 04:47 ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion | IRC log http://irclog.whitequark.org/linux-rockchip | Community GH https://github.com/linux-rockchip | Rockchip GH https://github.com/rockchip-linux | ML https://groups.google.com/group/linux-rockchip

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00:48 <hanetzer> maz: hey, think you're the dude with the kevin doing kexec stuff?

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07:12 <maz> hanetzer: I've been known to be using kexec on kevin, yes. not exactly smooth sailing!

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08:48 <vicencb> Esmil: also tested your second patch on kevin, success!

08:51 <vicencb> hanetzer: maz: i've also been using kexec on kevin, has maz says not smooth, but works enough well for me

08:51 <vicencb> take a look at https://gitlab.com/vicencb/kevinboot

08:55 <vicencb> i remember on CromeOS to be able to choose the display resolution as native (2400x1600) and also as 1200x800, how can this be configured on linux?

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10:56 <Esmil> vicencb: Cool. The patch i just sent is actually slightly differrent from to two you already tested, so you might want to try that one out too. Sorry

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18:21 <hanetzer> maz: well I just get 'kexec_core: starting new kernel' and then what's likely a forever hang :)

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20:19 <hanetzer> vicencb: looks interesting. if I could get straight kexec to work on my kevin I'm going to be looking into coreboot with a uImage.FIT payload with petitboot

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21:23 <mrjay> ok 18 beers later rk3399 pipo p10 boots ubuntu ... but only on four little cores ...

21:23 <mrjay> ... sadly when i enable boot on all cores it hangs

21:24 <mrjay> just after cpu bringup

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21:25 <mrjay> anyone had same issue with rk3399 ? and have a solution?

21:26 <mrjay> bootlog: https://pastebin.com/hp2xmTTL

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21:30 <hanetzer> mrjay: assuming stock ubuntu kernel config?

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21:31 <mrjay_> hanetzer: nope ... linux-next with arm64 defconfig + small changes

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21:38 <hanetzer> hmm. how do you enable/disable the big cores?

21:39 <mrjay_> most simple way is maxcpus=4 parameter

21:39 <hanetzer> gotcha, so no source modification or dtb manipulation.

21:39 <mrjay_> yeap

21:55 <mmind00> mrjay_: possibly the regulator not working?

21:55 <mmind00> mrjay_: i.e. the big cluster generally has a different power-rail

21:59 <mrjay_> mmind00: i think i tested that

22:00 <mrjay_> mmind00: even enabled in u-boot this pmic/regulator and assigned voltage by hand

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