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Hello Dear, After flashing *Armsom-cm5-rpi-cm4-io_*, there is one critical problem. onboard USB hub always connects and disconnects 2 times when booting. dmesg outputs: [ 6.190239] hub 1-1:1.0: USB hub found … [ 7.868081] rk-pcie 2a200000.pcie: PCIe Link Fail, LTSSM is 0x3, hw_retries=0 [ 7.868642] usb 1-1: USB disconnect, device number 2 … [ 9.326443] hub 1-1:1.0: USB hub found … [ 11.213062] rk-pcie 2a200000.pcie: PCIe Link Fail, LTSSM is 0x3, hw_retries=1 [ 11.213297] usb 1-1: USB disconnect, device number 4 I have tried with many variations, but the onboard hub is always disconnected. server/desktop community release/ self build several tags from 25.5 to 26.2 CONFIG_USB_ONBOARD_HUB O/X rpi cm4 io board/ Ochin board However, Armsom's official image has no problem with the onboard usb hub. CM4-nano-B has no onboard hub, and has no problem with external hub. So, it seems to be a SW problem. In addition (for information), I tried custom-build without pcie because hub disconnection happens near pcie. Kernel menuconfig disables Rockchip PCIe host cont/ Rockchip DesignWare PCIe cont/ Broadcom Wireless Device Drv. Device Drivers ---> [*] PCI support ---> PCI controller drivers ---> < > Rockchip PCIe host controller DesignWare PCI Core Support ---> < > Rockchip DesignWare PCIe controller ... [*] Network device support ---> [*] Wireless LAN ---> <*> Rockchip Wireless LAN support ---> [ ] Broadcom Wireless Device Driver Support ---> Then, both pcie and onboard-usb-hub disappear in dmesg even though any usb option is not changed. Please review this problem. Thanks.
