Hi, +CC u-boot-amlo...@groups.io +CC linux-amlo...@lists.infradead.org
On 05/05/2025 00:34, Wayne Schroeder wrote:
Hello. I am not sure if this is a bug, or even related to u-boot, but I am reporting it here because it was easiest to resolve via a u-boot change. I am using u-boot-2025.04 (source) with a mainline linux from Arch Linux Arm. Linux alarm 6.14.4-1-aarch64-ARCH #1 SMP PREEMPT_DYNAMIC Sat Apr 26 13:02:01 MDT 2025 aarch64 GNU/Linux On my odroid-n2+, the USB ports work on the first boot after power. If I run shutdown -r now, or hit ctl-alt-del and otherwise reboot the system, the usb ports do not function at the next or subsequent boot up.
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 ?
My apologies if this is not applicable to u-boot because it is a linux issue--I am not sure what the source of the issue is, but adjusting the u-boot .config after make odroid-n2_defconfig resolved the issue entirely. I am booting via extlinux/extlinux.conf and have adjusted my CONFIG_BOOTCOMMAND before build to execute a usb reset prior to the existing run distro_bootcmd. CONFIG_BOOTCOMMAND="usb reset; run distro_bootcmd"
I'm pretty sure there's driver callbacks we should implement to do the same here, I need to check.
This has allowed me to reboot the system and successfully have access to the USB devices such as my keyboard, mouse, and root file system on USB3 SSD. Thanks! Wayne
