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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<vagrantc> anyone know of u-boot branches for the pinebook-pro that have working LCD video ?
<macc24> vagrantc: pbp has edp panel?
<vagrantc> think so
<macc24> ok
<vagrantc> the nuances between screen types are lost on me ... i mostly like ones that can display text and pictures :)
<vagrantc> now i can't remember if i saw hdmi output working from u-boot on the rockpro64 and/or rock64
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<Net147> is there a branch for 5.10 available that supports MIPI-DSI init sequence in device tree?
<macc24> Net147: why?
<Net147> macc24: I have a vendor Android BSP that supports MIPI-DSI display but I want to make it work on Linux mainline.
<Net147> macc24: okay. do you have a guide for writing panel drivers?
<macc24> 10 seconds, you read really fast
<macc24> just copy driver for panel closest to what you are porting
<macc24> and adjust couple of things that are panel specific
<Net147> macc24: thanks, I will try...
<macc24> Net147: what panel are you trying to port?
<macc24> Net147: where is vendor bsp source code?
<Net147> macc24: not on website, only provided by contacting vendor directly
<Net147> macc24: it has 223 commands in the initialization sequence
<macc24> can you paste dts file? not here
<macc24> or dtsi, whatever contains panel binding
<macc24> s/binding/node/
<macc24> looks to me like panel-feixin-k101-im2ba02.c is close enough
<macc24> start by adjusting init sequence of it
<Net147> macc24: it looks pretty close, that helps a lot. thanks./
<Net147> macc24: how did you find it so quickly?
<macc24> Net147: i just looked around drivers/gpu/drm/panel
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<Net147> macc24: any thoughts how to add the last 2 commands of the sequence?
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* vagrantc looks forward to trying u-boot 2021.07-rc1 on pinebook which apparently has eDP display enabled
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<vagrantc> yay, works nicely!
<vagrantc> still an issue with usb from u-boot breaking boot though :/
<anarsoul> how does it break the boot?
<vagrantc> stalls after loading kernel if usb is started :/
<vagrantc> i've patches in debian and guix that i stole to disable preboot as it starts usb
<vagrantc> why that is an issue ... /o\ ... no idea, haven't much of a lead to debug it
<anarsoul> vagrantc: probably u-boot doesn't disable USB DMA before jumping into the kernel?
<vagrantc> also an issue for rockpro64
<anarsoul> try asking uboot-devel ML?
<mps> so (in theory) it could work on gru-kevin chromebook, hmm worth trying
<macc24> mps: let me know when you get it to work on kevin
<mps> macc24: :)
<mps> sure, if I got it
<mps> but now I'm fighting with exynos peach pi and mwifiex_sdio crashes
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<vagrantc> maybe disabling usb-3 would be a workaround that still allows the keyboard to work
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<rtp> vagrantc: there's a patch in uboot ml (which has been rejected) for the usb boot hang with efi
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<rtp> vagrantc: i'm off now but feel free to ping me if you have comments about pbp edp in uboot
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<vagrantc> rtp: thanks!
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