I'm getting the following error message, which leads to a continuous reset loop in my CPU (MPC8548). U-Boot version is 1.3.4 and latest OHCI patches are available.
USB: OHCI pci controller (1033, 0035) found @(0:19:0) OHCI regs address 0x80020000 scanning bus for devices... ERROR: CTL:TIMEOUT ERROR: CTL:TIMEOUT 2 USB Device(s) found scanning bus for storage devices... 0 Storage Device(s) found Hit key 'u' to stop autoboot: 0 ### JFFS2 loading 'uImage' to 0x1000000 <cut> ohci_hcd 0000:00:13.0: OHCI Host Controller ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 1 ohci_hcd 0000:00:13.0: irq 19, io mem 0x80020000 usb usb1: configuration #1 chosen from 1 choice hub 1-0:1.0: USB hub found hub 1-0:1.0: 3 ports detected Initializing USB Mass Storage driver... usb 1-3: new full speed USB device using ohci_hcd and address 2 --------> continuous resets from this point
# usb info 1: Hub, USB Revision 1.10 - OHCI Root Hub - Class: Hub - PacketSize: 8 Configurations: 1 - Vendor: 0x0000 Product 0x0000 Version 0.0 Configuration: 1 - Interfaces: 1 Self Powered 0mA Interface: 0 - Alternate Setting 0, Endpoints: 1 - Class Hub - Endpoint 1 In Interrupt MaxPacket 2 Interval 255ms
Configuration: 0 - Interfaces: 0 Bus Powered 0mA
# usb start (Re)start USB... USB: OHCI pci controller (1033, 0035) found @(0:19:0) OHCI regs address 0x80020000 scanning bus for devices... ERROR: CTL:TIMEOUT 2 USB Device(s) found scanning bus for storage devices... 0 Storage Device(s) found
Any advice how to recover from this issue? Neither "usb start" nor "usb reset" seems to help. Only powering off/on the HW can help the situation.
I need to prevent reset loops by being able to recover from this potential issue in runtime.