Hi Iru Cai, take a look at this http://review.coreboot.org/#/c/11765/ change. But beware there can be issues with that port.
Regards Zaolin > Hi, > > I installed coreboot on my Lenovo ThinkPad T420 laptop today, and I'd > like to share some experience and hope some one can solve some issues > on it. > > First, I built the T420s port and flashed it to the T420 laptop. > Fortunately, the laptop could be brought up and boot to Linux. > However, several USB ports didn't function properly(except the one > for EHCI debug) because of the difference between T420s and T420 > model. Now I've checked and used the code from the result generated > from autoport, and all the USB ports work fine. > > However, the devicetree.cb file generated from autoport does not work > properly. I use GRUB payload with native graphic init. When I use the > T420s devicetree.cb, it works fine, but with the autoport > devicetree.cb, only the backlight is on and nothing displays. At last > I built a kernel for GRUB payload, and the kernel handled the display > properly, then I reflashed another ROM with flashrom to unbrick my > laptop. > > So can some one give me some instruction on devicetree.cb file? And > another thing, how can I submit the code to the coreboot repository? > Is symlinks to another source files allowed in the source tree? > > Iru Cai > > -- > coreboot mailing list: coreboot@coreboot.org > http://www.coreboot.org/mailman/listinfo/coreboot
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