It's hard for me to quantify if usb works in u-boot as I'm not loading off of any usb storage devices. It certainly never lets me use the keyboard to abort auto boot, and never has. On reboot, to reliably get it to work, I have to do a usb reset and sleep some amount of time before doing distro boot. I picked 10 seconds. If you would like for me to do some scripted boot command additions before my extlinux to gather data, I can.
Right now, what I have done is make a reboot hook in linux to touch a file on the boot partition that my bootcommand fatrms and if it was present, it resets usb and sleeps 10 seconds, so it's reliable to reboot remotely like that. Let me know how else I can gather any data. On Wed, May 7, 2025 at 7:01 AM <neil.armstr...@linaro.org> wrote: > > On 05/05/2025 15:12, Wayne Schroeder wrote: > > If I add the usb reset command, it works reliably at reboot, but it > > does not work on a fresh power-up with that change. > > OK this means there's a dangling resource, Does USB always work within > U-Boot or it breaks U-Boot and Linux in those cases ? > > > > > > > On Mon, May 5, 2025 at 2:07 AM <neil.armstr...@linaro.org> wrote: > > > >> I think it's a very long term issue, USB lacks a proper reset at probe on > >> warm reset, does USB still work from U-Boot after the reboot ? > >> >
