Hi, > > LCD output, nothing answering on serial console (@1.5Mbps > > (uboot speed) or 115.2Kbps (kernel speed, I think)).
Both kernel and u-boot use 1500000 baud. > Strange, seems that Caliph did manage to get a serial console. Caliph, > any insight here? A configuration close to the pinebook-pro-barebones-os configuration worked for me software-wise (albiet, without LCD output), but there's a few hardware tweaks that need to be done to get it working. On the mainboard there's two switches: an eMMC disable switch and a serial output switch. The serial output switch needs to be set properly to get serial out through the headphone jack. Nominally you should also disable the internal eMMC if there's anything on it in order to use Guix's u-boot, but I wasn't able to get the switch to work so I just removed the eMMC flash. From the log posted earlier, it does look like that's the case, so it's booting from the factory-default 2017 u-boot with blobs. I just realized that the configuration I used had one (significant) change: agetty needs to be started on /dev/ttyS2, not /dev/ttyS0. I have just submitted a patch to fix this (https://issues.guix.gnu.org/45997). To get the LCD up, I used an inferior with linux-libre-pinebook-pro from the wip-pinebook-pro branch, and included some kernel arguments from janneke that Mathieu told me about, though I'm unsure how necessary they are with the kernel patches. I have also heard that disabling CONFIG_ROCKCHIP_CDN_DP on mainline would work too, but I haven't tested it. I'll attach a config that should work to bring up serial and the LCD. Hope this helps.
