#14516: USB 1.1 (ohci) doesn't work on MT7620a
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Reporter: paolo.baroncini@… | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone: Chaos Calmer (trunk)
Component: kernel | Version: Trunk
Resolution: | Keywords:
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Comment (by lsoltero):
i am having exactly the same issue with an AsiaRF board running CC r42230
root@OpenWrt:/# dmesg | grep -i ehci
[ 5.940000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 5.950000] ehci-platform: EHCI generic platform driver
[ 6.190000] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 6.200000] ehci-platform 101c0000.ehci: new USB bus registered,
assigned bus number 1
[ 6.220000] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[ 6.250000] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[ 6.280000] ehci-pci: EHCI PCI platform driver
root@OpenWrt:/# dmesg | grep -i ohci
[ 6.290000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 6.300000] ohci-platform 101c1000.ohci: Generic Platform OHCI
Controller
[ 6.310000] ohci-platform 101c1000.ohci: new USB bus registered,
assigned bus number 2
[ 6.330000] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
I plug in a USB 2.0 echi hub... and it works fine its detected and works
fine.
root@OpenWrt:/# [ 653.260000] usb 1-1: new high-speed USB device number 2
using ehci-platform
[ 653.430000] hub 1-1:1.0: USB hub found
[ 653.430000] hub 1-1:1.0: 4 ports detected
root@OpenWrt:/# lsusb
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
I then plug in an OHCI USB 1.1 device into the USB2.0 hub and it also
works fine....
root@OpenWrt:/# [ 679.930000] usb 1-1.1: new full-speed USB device number
3 using ehci-platform
[ 680.060000] pl2303 1-1.1:1.0: pl2303 converter detected
[ 680.080000] usb 1-1.1: pl2303 converter now attached to ttyUSB0
root@OpenWrt:/# [ 692.230000] usb 1-1.1: USB disconnect, device number 3
[ 692.240000] pl2303 ttyUSB0: pl2303 converter now disconnected from
ttyUSB0
[ 692.260000] pl2303 1-1.1:1.0: device disconnected
[ 699.890000] usb 1-1.1: new full-speed USB device number 4 using ehci-
platform
[ 700.020000] pl2303 1-1.1:1.0: pl2303 converter detected
[ 700.040000] usb 1-1.1: pl2303 converter now attached to ttyUSB0
[ 704.000000] usb 1-1.1: USB disconnect, device number 4
[ 704.010000] pl2303 ttyUSB0: pl2303 converter now disconnected from
ttyUSB0
[ 704.050000] pl2303 1-1.1:1.0: device disconnected
[ 707.580000] usb 1-1: USB disconnect, device number 2
i then remove the USB 2 HUB and plug in the OHCI device directly into the
USB and get this...
[ 714.900000] usb 2-1: new full-speed USB device number 2 using ohci-
platform
and nothing else.
from then on the USB port becomes inoperable until the system is rebooted.
any thoughts on how this might be fixed?
here is a recent posting which touches on this ticket.
http://comments.gmane.org/gmane.comp.embedded.openwrt.devel/25773
--
Ticket URL: <https://dev.openwrt.org/ticket/14516#comment:11>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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