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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<strfry> hi, i'm trying to bring up a chromebook with rk3288 with u-boot
<hanetzer> welcome! :P
<strfry> so far i'm stuck in the uboot console, because it neither detects USB devices nor the external SD card
<hanetzer> strfry: now that you mention this issue is common to two different rk3288 veyron chromebooks I begin to think its a code issue, so I'm gonna dig into the coreboot/depthcharge code and see what it does different :)
<strfry> i figured out that it has something to do with power managment. the USB vcc isn't enabled correctly
<strfry> hanetzer: that would be awesome, thanks :)
<strfry> so that's interesting. when i manually disable the usb host regulator, vcc drops to 0v. but when it's enabled, it's only 1.5-2 volts
<strfry> now i re-enabled them, and they're at 5V. strange...
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<strfry> anyone here who's using linux on rockchip chromebooks?
<Ke> quite a few people
<buZz> anyone that ownes a rockchip chromebook, i'd say ;)
<buZz> owns*
<ccaione> strfry: me :D
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<strfry> i'm having trouble assembling a working kernel config with matching devicetree
<strfry> i have a veyron_mighty device, but weirdly the veyron_jerry dtb gets much further
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<ccaione> what's the problem you see
<strfry> currently i'm back to not seeing anything, past "Starting Kernel..."
<strfry> i previously had early UART working, but then i somehow destroyed my config
<strfry> before when it was working, early printk always went silent after initialising the proper serial driver
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<strfry> so i'd be pretty happy about a working rk3288/chromebook .config example
<ccaione> do you see anything else on the UART when enabling the early console / earlyprintk ?
<ccaione> try to use my downstream kernel https://github.com/endlessm/linux-rockchip/tree/master
<ccaione> with `rockchip_linux_defconfig`
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<strfry> absolutely nothing
<strfry> i'll give your kernel a try, thanks
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<strfry> ccaione: that seems to but, until "attempted to kill init"
<strfry> it won't output to UART though, so i can't actually see what's going on
<ccaione> strfry: what bootargs are you passing to the kernel? it seems some problem with the rootfs
<strfry> none, i'm passing an initramfs that should at least provide init
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<strfry> oops, i lied
<strfry> actually passing in nothing works
<strfry> awesome :D
<ccaione> I'm curious: are you using my patch to enable the `vdd_logic` regulator?
<strfry> yes
<ccaione> did you try without? I could upstream that change if that's required also on other chromebooks
<strfry> i can try it
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<SolidHal> Anyone here on kernel 4.17 with the rk3288 on theAsus c201?
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<SolidHal> With usb working once you get in linux? I can boot with usb plugged in and it will work until I remove it and try to plug it back in.
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