#linux-rockchip on 2017-11-03 — 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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08:26 <ramcq> sooo.... built the rockchip-linux kernel with the speedy dtb and defconfig

08:26 <ramcq> seems that I just get a white screen on my Asus C201 when I select ctrl+U to boot from the SD

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09:04 <wens> you are probably missing some drivers

09:04 <wens> one that is really easy to miss is "Rockchip IO domain support" or ROCKCHIP_IODOMAIN

09:05 <wens> and it's pretty much required for anything to work

09:09 <ramcq> hmm

09:09 <ramcq> I'd personally have that default to yes... :P

09:11 <ramcq> am I better off with the rockchip-linux-deconfig than the rockchip-chromium-deconfig?

09:11 <ramcq> I was worried about getting out of sync with the dtb, like if Mali is reconfigured to be a dtb driver and not a platform one etc

09:13 <Ke> ramcq: not sure, I am using this https://users.aalto.fi/~jkarlson/files/config-4.9.60

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09:13 <Ke> https://users.aalto.fi/~jkarlson/files/dtc-cmp based on output from this script

09:14 <Ke> this script exists because Linus hates you and drivers and compatible strings are not indexed

09:15 <ramcq> I'm using the 4.4.x kernel from rockchip-linux/kernel

09:15 <ramcq> because I want to match the mali driver with the blobs there

09:16 <Ke> right, if you wan't mali, you should not listen to anything I say, I don't want that blob

09:16 <ramcq> I think the chromium defconfig there is just... ass though. because it seems to be missing a lot of obvious stuff! :p

09:17 <Ke> ramcq: you can use the dtc-cmp to find missing compatibles from your vmlinux

09:18 <Ke> it takes the compiled kernel vmlinux and device dtb as inputs

09:18 <ramcq> Ke: ok, cool

09:18 <Ke> should be trivial enough to figure out, what that hack does

09:19 <Ke> it only works, if you compile drives in the kernel image and not as modules and only if you are not unlucky

09:19 <Ke> since using grep for the compatible strings is a hack after all

09:39 <wzyy2> https://github.com/wzyy2/linux/tree/chromebook

09:39 <wzyy2> I use this kernel branch for my speedy.

09:40 <wzyy2> rockchip_linux_defconfig + https://github.com/wzyy2/linux/blob/chromebook/sign-kernel.sh

09:53 <ramcq> aha, cool

09:59 <ramcq> wzyy2: you think this patch would be needed on the rockchip-linux/kernel 4.4 tree as well?

10:00 <ramcq> obviously with the panel being all white, and one of these being connecting edp, seems like it could be relevant

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19:32 <Myy> にゃぁ♪

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