USB problem on beagleboard clone

USB problem on beagleboard clone

[Maximilian Schwerin]

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Hi all,

we've designed two beagle board clones (two different layouts) for a customer. After quite some time without any problems they are now seeing USB problems on some of the boards. I have so far not been able to reproduce the problem...

The USB port of the OMAP the problems appear on is connected through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. Attached is the kernel output. I'm not even sure if this is related to our board, or if this might be a misbehaving device?!

If someone has an idea what this could be and what I could do to fix or at least further debug the problem please speak up.

Cheers and thanks,

Maximilian Schwerin.

__________________________________________________________________________________________

 Maximilian Schwerin | maximilian.schwerin-Uf0zVKHSUsGzQB+pC5nmwQ@public.gmane.org

 Tigris Elektronik GmbH | Wikingerufer 7 | 10555 Berlin, Germany | http://www.tigris.de
 Tel: +49 (30) 301048-30 | Fax: +49 (30) 301048-59

 Geschäftsführer/CEO: Henry Westphal, Guido Kuhlmann
 Sitz der Gesellschaft/Company's registered office: Berlin
 Amtsgericht/Register: Berlin-Charlottenburg, HRB 71737

 PGP-Keys: mailto:pgp-Uf0zVKHSUsGzQB+pC5nmwQ@public.gmane.org
__________________________________________________________________________________________

[-- Attachment #2: Type: application/pgp-signature, Size: 197 bytes --]

AW: USB problem on beagleboard clone

[Maximilian Schwerin]

[-- Attachment #1.1: Type: text/plain, Size: 1081 bytes --]

Sorry :-( With log now.

> -----Ursprüngliche Nachricht-----
> Von: linux-usb-owner@vger.kernel.org 
> [mailto:linux-usb-owner@vger.kernel.org] Im Auftrag von 
> Maximilian Schwerin
> Gesendet: Freitag, 14. September 2012 14:26
> An: linux-omap@vger.kernel.org; linux-usb@vger.kernel.org
> Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> 
> Hi all,
> 
> we've designed two beagle board clones (two different 
> layouts) for a customer. After quite some time without any 
> problems they are now seeing USB problems on some of the 
> boards. I have so far not been able to reproduce the problem...
> 
> The USB port of the OMAP the problems appear on is connected 
> through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> Attached is the kernel output. I'm not even sure if this is 
> related to our board, or if this might be a misbehaving device?!
> 
> If someone has an idea what this could be and what I could do 
> to fix or at least further debug the problem please speak up.
> 
> Cheers and thanks,
> 
> Maximilian Schwerin.

[-- Attachment #1.2: USB_failures.log --]
[-- Type: application/octet-stream, Size: 19767 bytes --]

[10438.153137] ------------[ cut here ]------------
[10438.157989] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10438.166534] Could not flush host TX2 fifo: csr: 2103
[10438.171691] Modules linked in: wiegand_gpio leds_gpio
[10438.177032] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10438.186828] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10438.196838] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10438.206848] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10438.216735] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10438.226379] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10438.235198] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10438.244110] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10438.253479] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10438.262664] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10438.272033] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10438.280761] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10438.289550] ---[ end trace bed609cbb075773d ]---
[10440.980346] ------------[ cut here ]------------
[10440.985198] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10440.993743] Could not flush host TX2 fifo: csr: 2103
[10440.998901] Modules linked in: wiegand_gpio leds_gpio
[10441.004241] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10441.014038] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10441.024047] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10441.034057] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10441.043945] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10441.053680] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10441.063781] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c02063a4>] (usbnet_start_xmit+0x1d8/0x328)
[10441.073974] [<c02063a4>] (usbnet_start_xmit+0x1d8/0x328) from [<c02ae690>] (dev_hard_start_xmit+0x4ac/0x6c8)
[10441.084259] [<c02ae690>] (dev_hard_start_xmit+0x4ac/0x6c8) from [<c02c0840>] (sch_direct_xmit+0x6c/0x234)
[10441.094238] [<c02c0840>] (sch_direct_xmit+0x6c/0x234) from [<c02aebd4>] (dev_queue_xmit+0x328/0x618)
[10441.103790] [<c02aebd4>] (dev_queue_xmit+0x328/0x618) from [<c02d0a64>] (ip_finish_output+0x3a8/0x484)
[10441.113525] [<c02d0a64>] (ip_finish_output+0x3a8/0x484) from [<c02d0eb4>] (ip_local_out+0x5c/0x78)
[10441.122863] [<c02d0eb4>] (ip_local_out+0x5c/0x78) from [<c02e76e8>] (tcp_v4_send_synack+0x78/0x98)
[10441.132232] [<c02e76e8>] (tcp_v4_send_synack+0x78/0x98) from [<c02e94e0>] (tcp_v4_conn_request+0x5a8/0x650)
[10441.142425] [<c02e94e0>] (tcp_v4_conn_request+0x5a8/0x650) from [<c02e19ac>] (tcp_rcv_state_process+0x84/0xa8c)
[10441.152954] [<c02e19ac>] (tcp_rcv_state_process+0x84/0xa8c) from [<c02e84c8>] (tcp_v4_do_rcv+0x190/0x204)
[10441.162963] [<c02e84c8>] (tcp_v4_do_rcv+0x190/0x204) from [<c02ea20c>] (tcp_v4_rcv+0x4f0/0x9b4)
[10441.172058] [<c02ea20c>] (tcp_v4_rcv+0x4f0/0x9b4) from [<c02cc298>] (ip_local_deliver_finish+0x12c/0x294)
[10441.182037] [<c02cc298>] (ip_local_deliver_finish+0x12c/0x294) from [<c02cc118>] (ip_rcv_finish+0x360/0x3b4)
[10441.192321] [<c02cc118>] (ip_rcv_finish+0x360/0x3b4) from [<c02aa9ac>] (__netif_receive_skb+0x360/0x3d8)
[10441.202209] [<c02aa9ac>] (__netif_receive_skb+0x360/0x3d8) from [<c02aaaa8>] (process_backlog+0x84/0x130)
[10441.212219] [<c02aaaa8>] (process_backlog+0x84/0x130) from [<c02aada4>] (net_rx_action+0x64/0x224)
[10441.221588] [<c02aada4>] (net_rx_action+0x64/0x224) from [<c003357c>] (__do_softirq+0xf4/0x21c)
[10441.230682] [<c003357c>] (__do_softirq+0xf4/0x21c) from [<c0033a8c>] (irq_exit+0x50/0x9c)
[10441.239227] [<c0033a8c>] (irq_exit+0x50/0x9c) from [<c000d958>] (handle_IRQ+0x64/0x84)
[10441.247497] [<c000d958>] (handle_IRQ+0x64/0x84) from [<c00084c0>] (omap3_intc_handle_irq+0x44/0x4c)
[10441.256958] [<c00084c0>] (omap3_intc_handle_irq+0x44/0x4c) from [<c0332e04>] (__irq_svc+0x44/0x60)
[10441.266296] Exception stack(0xc04cff68 to 0xc04cffb0)
[10441.271575] ff60:                   00000001 c04d3130 00000000 c04d3130 c04ce000 c04d4ce8
[10441.280120] ff80: c0524d48 c04d48f0 80004059 413fc082 00000000 00000000 000000a0 c04cffb0
[10441.288665] ffa0: c0069118 c001c19c 20000013 ffffffff
[10441.293945] [<c0332e04>] (__irq_svc+0x44/0x60) from [<c001c19c>] (omap3_pm_idle+0x184/0x194)
[10441.302764] [<c001c19c>] (omap3_pm_idle+0x184/0x194) from [<c000dbf8>] (cpu_idle+0x60/0xb8)
[10441.311492] [<c000dbf8>] (cpu_idle+0x60/0xb8) from [<c04a16c4>] (start_kernel+0x254/0x294)
[10441.320129] ---[ end trace bed609cbb075773e ]---
[10447.507568] ------------[ cut here ]------------
[10447.512420] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10447.520965] Could not flush host TX3 fifo: csr: 2003
[10447.526153] Modules linked in: wiegand_gpio leds_gpio
[10447.531463] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10447.541290] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10447.551269] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10447.561279] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10447.571197] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10447.580810] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10447.589630] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10447.598541] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10447.607910] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10447.617095] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10447.626464] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10447.635192] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10447.644012] ---[ end trace bed609cbb075773f ]---
[10450.654235] ------------[ cut here ]------------
[10450.659118] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10450.667663] Could not flush host TX3 fifo: csr: 2003
[10450.672821] Modules linked in: wiegand_gpio leds_gpio
[10450.678161] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10450.687957] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10450.697967] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10450.707977] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10450.717864] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10450.727600] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10450.737701] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0)
[10450.747619] [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10450.756958] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10450.765686] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10450.774505] ---[ end trace bed609cbb0757740 ]---
[10455.661804] ------------[ cut here ]------------
[10455.666687] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10455.675201] Could not flush host TX3 fifo: csr: 2003
[10455.680389] Modules linked in: wiegand_gpio leds_gpio
[10455.685699] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10455.695526] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10455.705535] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10455.715545] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10455.725433] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10455.735076] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10455.743896] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10455.752807] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10455.762176] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10455.771362] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10455.780731] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10455.789459] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10455.798248] ---[ end trace bed609cbb0757741 ]---
[10458.607574] ------------[ cut here ]------------
[10458.612426] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10458.620971] Could not flush host TX3 fifo: csr: 2003
[10458.626129] Modules linked in: wiegand_gpio leds_gpio
[10458.631469] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10458.641296] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10458.651275] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10458.661285] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10458.671203] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10458.680908] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10458.691009] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0)
[10458.700927] [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10458.710296] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10458.719024] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10458.727813] ---[ end trace bed609cbb0757742 ]---
[10463.609374] ------------[ cut here ]------------
[10463.614227] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10463.622772] Could not flush host TX3 fifo: csr: 2003
[10463.627960] Modules linked in: wiegand_gpio leds_gpio
[10463.633270] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10463.643096] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10463.653106] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10463.663085] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10463.673004] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10463.682647] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10463.691467] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10463.700378] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10463.709747] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10463.718902] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10463.728271] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10463.736999] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10463.745819] ---[ end trace bed609cbb0757743 ]---
[10466.527709] ------------[ cut here ]------------
[10466.532562] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10466.541107] Could not flush host TX3 fifo: csr: 2003
[10466.546264] Modules linked in: wiegand_gpio leds_gpio
[10466.551605] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10466.561401] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10466.571411] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10466.581420] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10466.591339] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10466.601043] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10466.611145] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0)
[10466.621063] [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10466.630432] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10466.639160] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10466.647949] ---[ end trace bed609cbb0757744 ]---
[10471.528259] ------------[ cut here ]------------
[10471.533142] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10471.541656] Could not flush host TX3 fifo: csr: 2003
[10471.546844] Modules linked in: wiegand_gpio leds_gpio
[10471.552154] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10471.561981] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10471.571990] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10471.582000] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10471.591888] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10471.601531] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10471.610351] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10471.619262] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10471.628631] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10471.637817] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10471.647186] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10471.655914] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10471.664703] ---[ end trace bed609cbb0757745 ]---
[10472.664825] ------------[ cut here ]------------
[10472.669677] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10472.678222] Could not flush host TX3 fifo: csr: 2003
[10472.683410] Modules linked in: wiegand_gpio leds_gpio
[10472.688720] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10472.698547] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10472.708557] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10472.718536] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10472.728454] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10472.738189] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10472.748260] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0)
[10472.758178] [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10472.767547] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10472.776275] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10472.785095] ---[ end trace bed609cbb0757746 ]---
[10477.665161] ------------[ cut here ]------------
[10477.670043] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10477.678558] Could not flush host TX3 fifo: csr: 2003
[10477.683746] Modules linked in: wiegand_gpio leds_gpio
[10477.689056] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10477.698883] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10477.708892] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10477.718902] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88)
[10477.728790] [<c022bcf8>] (musb_cleanup_urb+0x4c/0x88) from [<c022be24>] (musb_urb_dequeue+0xf0/0x110)
[10477.738433] [<c022be24>] (musb_urb_dequeue+0xf0/0x110) from [<c020d73c>] (unlink1+0xcc/0xdc)
[10477.747253] [<c020d73c>] (unlink1+0xcc/0xdc) from [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0)
[10477.756164] [<c020ebbc>] (usb_hcd_unlink_urb+0x5c/0xb0) from [<c020fd38>] (usb_kill_urb+0x48/0xe4)
[10477.765533] [<c020fd38>] (usb_kill_urb+0x48/0xe4) from [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0)
[10477.774719] [<c0217ea8>] (usbdev_ioctl+0x15b0/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10477.784088] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10477.792816] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10477.801605] ---[ end trace bed609cbb0757747 ]---
[10480.670074] ------------[ cut here ]------------
[10480.674926] WARNING: at drivers/usb/musb/musb_host.c:125 musb_h_tx_flush_fifo+0x44/0x68()
[10480.683471] Could not flush host TX3 fifo: csr: 2003
[10480.688629] Modules linked in: wiegand_gpio leds_gpio
[10480.693969] [<c0011c88>] (unwind_backtrace+0x0/0xe0) from [<c002d814>] (warn_slowpath_common+0x4c/0x64)
[10480.703765] [<c002d814>] (warn_slowpath_common+0x4c/0x64) from [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c)
[10480.713775] [<c002d8ac>] (warn_slowpath_fmt+0x2c/0x3c) from [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68)
[10480.723785] [<c022af3c>] (musb_h_tx_flush_fifo+0x44/0x68) from [<c022b230>] (musb_start_urb+0x168/0x544)
[10480.733673] [<c022b230>] (musb_start_urb+0x168/0x544) from [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc)
[10480.743408] [<c022ba80>] (musb_urb_enqueue+0x474/0x4dc) from [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c)
[10480.753509] [<c020ea7c>] (usb_hcd_submit_urb+0x5b8/0x69c) from [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0)
[10480.763427] [<c0217cf0>] (usbdev_ioctl+0x13f8/0x1bc0) from [<c00daf74>] (do_vfs_ioctl+0x494/0x504)
[10480.772796] [<c00daf74>] (do_vfs_ioctl+0x494/0x504) from [<c00db030>] (sys_ioctl+0x4c/0x6c)
[10480.781524] [<c00db030>] (sys_ioctl+0x4c/0x6c) from [<c000d0a0>] (ret_fast_syscall+0x0/0x3c)
[10480.790313] ---[ end trace bed609cbb0757748 ]---

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Re: USB problem on beagleboard clone

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1486 bytes --]

Hi,

On Fri, Sep 14, 2012 at 02:57:49PM +0200, Maximilian Schwerin wrote:
> Sorry :-( With log now.
> 
> > -----Ursprüngliche Nachricht-----
> > Von: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org 
> > [mailto:linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] Im Auftrag von 
> > Maximilian Schwerin
> > Gesendet: Freitag, 14. September 2012 14:26
> > An: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> > 
> > Hi all,
> > 
> > we've designed two beagle board clones (two different 
> > layouts) for a customer. After quite some time without any 
> > problems they are now seeing USB problems on some of the 
> > boards. I have so far not been able to reproduce the problem...
> > 
> > The USB port of the OMAP the problems appear on is connected 
> > through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> > Attached is the kernel output. I'm not even sure if this is 
> > related to our board, or if this might be a misbehaving device?!
> > 
> > If someone has an idea what this could be and what I could do 
> > to fix or at least further debug the problem please speak up.

I have never seen that error before on any of the boards I have. One
question though, if the port is always Host, why are you using the OTG
subsystem instead of the actual Host Subsystem which has an EHCI
controller ?

-- 
balbi

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Re: USB problem on beagleboard clone

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1604 bytes --]

Hi again,

On Fri, Sep 14, 2012 at 04:07:56PM +0300, Felipe Balbi wrote:
> On Fri, Sep 14, 2012 at 02:57:49PM +0200, Maximilian Schwerin wrote:
> > Sorry :-( With log now.
> > 
> > > -----Ursprüngliche Nachricht-----
> > > Von: linux-usb-owner@vger.kernel.org 
> > > [mailto:linux-usb-owner@vger.kernel.org] Im Auftrag von 
> > > Maximilian Schwerin
> > > Gesendet: Freitag, 14. September 2012 14:26
> > > An: linux-omap@vger.kernel.org; linux-usb@vger.kernel.org
> > > Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> > > 
> > > Hi all,
> > > 
> > > we've designed two beagle board clones (two different 
> > > layouts) for a customer. After quite some time without any 
> > > problems they are now seeing USB problems on some of the 
> > > boards. I have so far not been able to reproduce the problem...
> > > 
> > > The USB port of the OMAP the problems appear on is connected 
> > > through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> > > Attached is the kernel output. I'm not even sure if this is 
> > > related to our board, or if this might be a misbehaving device?!
> > > 
> > > If someone has an idea what this could be and what I could do 
> > > to fix or at least further debug the problem please speak up.
> 
> I have never seen that error before on any of the boards I have. One
> question though, if the port is always Host, why are you using the OTG
> subsystem instead of the actual Host Subsystem which has an EHCI
> controller ?

Which kernel are you using ? Have you tried with v3.5 or something more
recent ?

-- 
balbi

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Re: USB problem on beagleboard clone

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 2367 bytes --]

On Fri, Sep 14, 2012 at 03:21:47PM +0200, Maximilian Schwerin wrote:
> Hi,
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Felipe Balbi [mailto:balbi-l0cyMroinI0@public.gmane.org] 
> > Gesendet: Freitag, 14. September 2012 15:08
> > An: Maximilian Schwerin
> > Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > Betreff: Re: USB problem on beagleboard clone (PGP: Plain, 
> > Unable to verify signature)
> > 
> > Hi,
> > 
> > On Fri, Sep 14, 2012 at 02:57:49PM +0200, Maximilian Schwerin wrote:
> > > Sorry :-( With log now.
> > > 
> > > > -----Ursprüngliche Nachricht-----
> > > > Von: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org 
> > > > [mailto:linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] Im Auftrag von 
> > > > Maximilian Schwerin
> > > > Gesendet: Freitag, 14. September 2012 14:26
> > > > An: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > > > Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> > > > 
> > > > Hi all,
> > > > 
> > > > we've designed two beagle board clones (two different 
> > > > layouts) for a customer. After quite some time without any 
> > > > problems they are now seeing USB problems on some of the 
> > > > boards. I have so far not been able to reproduce the problem...
> > > > 
> > > > The USB port of the OMAP the problems appear on is connected 
> > > > through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> > > > Attached is the kernel output. I'm not even sure if this is 
> > > > related to our board, or if this might be a misbehaving device?!
> > > > 
> > > > If someone has an idea what this could be and what I could do 
> > > > to fix or at least further debug the problem please speak up.
> > 
> > I have never seen that error before on any of the boards I have. One
> > question though, if the port is always Host, why are you using the OTG
> > subsystem instead of the actual Host Subsystem which has an EHCI
> > controller ?
> > 
> > -- 
> > balbi
> > 
> 
> I'm still on 3.3 but am planing to go to a newer version. We used the
> OTG port so we would not need another chip on a rather small board.

And which chip are you talking about ? You already have LAN9514 on your
board anyway...

-- 
balbi

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AW: USB problem on beagleboard clone

[Maximilian Schwerin]

[-- Attachment #1: Type: text/plain, Size: 2106 bytes --]

Hi,

> -----Ursprüngliche Nachricht-----
> Von: Felipe Balbi [mailto:balbi-l0cyMroinI0@public.gmane.org] 
> Gesendet: Freitag, 14. September 2012 15:08
> An: Maximilian Schwerin
> Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Betreff: Re: USB problem on beagleboard clone (PGP: Plain, 
> Unable to verify signature)
> 
> Hi,
> 
> On Fri, Sep 14, 2012 at 02:57:49PM +0200, Maximilian Schwerin wrote:
> > Sorry :-( With log now.
> > 
> > > -----Ursprüngliche Nachricht-----
> > > Von: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org 
> > > [mailto:linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] Im Auftrag von 
> > > Maximilian Schwerin
> > > Gesendet: Freitag, 14. September 2012 14:26
> > > An: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > > Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> > > 
> > > Hi all,
> > > 
> > > we've designed two beagle board clones (two different 
> > > layouts) for a customer. After quite some time without any 
> > > problems they are now seeing USB problems on some of the 
> > > boards. I have so far not been able to reproduce the problem...
> > > 
> > > The USB port of the OMAP the problems appear on is connected 
> > > through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> > > Attached is the kernel output. I'm not even sure if this is 
> > > related to our board, or if this might be a misbehaving device?!
> > > 
> > > If someone has an idea what this could be and what I could do 
> > > to fix or at least further debug the problem please speak up.
> 
> I have never seen that error before on any of the boards I have. One
> question though, if the port is always Host, why are you using the OTG
> subsystem instead of the actual Host Subsystem which has an EHCI
> controller ?
> 
> -- 
> balbi
> 

I'm still on 3.3 but am planing to go to a newer version. We used the OTG port so we would not need another chip on a rather small board.

Cheers, m.

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AW: USB problem on beagleboard clone

[Maximilian Schwerin]

[-- Attachment #1: Type: text/plain, Size: 3003 bytes --]

> -----Ursprüngliche Nachricht-----
> Von: Felipe Balbi [mailto:balbi-l0cyMroinI0@public.gmane.org] 
> Gesendet: Freitag, 14. September 2012 15:19
> An: Maximilian Schwerin
> Cc: balbi-l0cyMroinI0@public.gmane.org; linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; 
> linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Betreff: Re: USB problem on beagleboard clone (PGP: Plain, 
> Unable to verify signature)
> 
> On Fri, Sep 14, 2012 at 03:21:47PM +0200, Maximilian Schwerin wrote:
> > Hi,
> > 
> > > -----Ursprüngliche Nachricht-----
> > > Von: Felipe Balbi [mailto:balbi-l0cyMroinI0@public.gmane.org] 
> > > Gesendet: Freitag, 14. September 2012 15:08
> > > An: Maximilian Schwerin
> > > Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > > Betreff: Re: USB problem on beagleboard clone (PGP: Plain, 
> > > Unable to verify signature)
> > > 
> > > Hi,
> > > 
> > > On Fri, Sep 14, 2012 at 02:57:49PM +0200, Maximilian 
> Schwerin wrote:
> > > > Sorry :-( With log now.
> > > > 
> > > > > -----Ursprüngliche Nachricht-----
> > > > > Von: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org 
> > > > > [mailto:linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] Im Auftrag von 
> > > > > Maximilian Schwerin
> > > > > Gesendet: Freitag, 14. September 2012 14:26
> > > > > An: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> > > > > Betreff: USB problem on beagleboard clone (PGP: Plain, Signed)
> > > > > 
> > > > > Hi all,
> > > > > 
> > > > > we've designed two beagle board clones (two different 
> > > > > layouts) for a customer. After quite some time without any 
> > > > > problems they are now seeing USB problems on some of the 
> > > > > boards. I have so far not been able to reproduce the 
> problem...
> > > > > 
> > > > > The USB port of the OMAP the problems appear on is connected 
> > > > > through a TPS65950 to a LAN9514 USB Hub + Ethernet Chip. 
> > > > > Attached is the kernel output. I'm not even sure if this is 
> > > > > related to our board, or if this might be a 
> misbehaving device?!
> > > > > 
> > > > > If someone has an idea what this could be and what I could do 
> > > > > to fix or at least further debug the problem please speak up.
> > > 
> > > I have never seen that error before on any of the boards 
> I have. One
> > > question though, if the port is always Host, why are you 
> using the OTG
> > > subsystem instead of the actual Host Subsystem which has an EHCI
> > > controller ?
> > > 
> > > -- 
> > > balbi
> > > 
> > 
> > I'm still on 3.3 but am planing to go to a newer version. 
> We used the
> > OTG port so we would not need another chip on a rather small board.
> 
> And which chip are you talking about ? You already have 
> LAN9514 on your
> board anyway...
> 
> -- 
> balbi
> 

How would I connect the OMAP to the LAN9514 without a PHY?

m.

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Re: USB problem on beagleboard clone

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1052 bytes --]

Hi,

On Fri, Sep 14, 2012 at 03:38:56PM +0200, Maximilian Schwerin wrote:
> > > > I have never seen that error before on any of the boards 
> > I have. One
> > > > question though, if the port is always Host, why are you 
> > using the OTG
> > > > subsystem instead of the actual Host Subsystem which has an EHCI
> > > > controller ?
> > > > 
> > > > -- 
> > > > balbi
> > > > 
> > > 
> > > I'm still on 3.3 but am planing to go to a newer version. 
> > We used the
> > > OTG port so we would not need another chip on a rather small board.
> > 
> > And which chip are you talking about ? You already have 
> > LAN9514 on your
> > board anyway...
> > 
> > -- 
> > balbi
> > 
> 
> How would I connect the OMAP to the LAN9514 without a PHY?

Fair enough.. for whatever reason I assumed you had external PHY with
MUSB. But seems like you're using the internal PHY...

Anyway, please check with my tree (see MAINTAINERS file), either master
branch or musb branch and let me know if you have the same behavior.

-- 
balbi

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Re: USB problem on beagleboard clone

[Paul Walmsley]

Hi

On Fri, 14 Sep 2012, Maximilian Schwerin wrote:

> we've designed two beagle board clones (two different layouts) for a 
> customer. After quite some time without any problems they are now seeing 
> USB problems on some of the boards. I have so far not been able to 
> reproduce the problem...
> 
> The USB port of the OMAP the problems appear on is connected through a 
> TPS65950 to a LAN9514 USB Hub + Ethernet Chip. Attached is the kernel 
> output. I'm not even sure if this is related to our board, or if this 
> might be a misbehaving device?!
> 
> If someone has an idea what this could be and what I could do to fix or 
> at least further debug the problem please speak up.

Are these BeagleBoard 3530 or BeagleBoard XM 3730 clones?

- Paul

AW: USB problem on beagleboard clone

[Maximilian Schwerin]

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Hi,

> -----Ursprüngliche Nachricht-----
> Von: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org 
> [mailto:linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] Im Auftrag von Paul Walmsley
> Gesendet: Mittwoch, 19. September 2012 03:24
> An: Maximilian Schwerin
> Cc: linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Betreff: Re: USB problem on beagleboard clone
> 
> Hi
> 
> On Fri, 14 Sep 2012, Maximilian Schwerin wrote:
> 
> > we've designed two beagle board clones (two different 
> layouts) for a 
> > customer. After quite some time without any problems they 
> are now seeing 
> > USB problems on some of the boards. I have so far not been able to 
> > reproduce the problem...
> > 
> > The USB port of the OMAP the problems appear on is 
> connected through a 
> > TPS65950 to a LAN9514 USB Hub + Ethernet Chip. Attached is 
> the kernel 
> > output. I'm not even sure if this is related to our board, 
> or if this 
> > might be a misbehaving device?!
> > 
> > If someone has an idea what this could be and what I could 
> do to fix or 
> > at least further debug the problem please speak up.
> 
> Are these BeagleBoard 3530 or BeagleBoard XM 3730 clones?
> 
> - Paul
> --
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> 

They're BeagleBoard XM clones. We're still trying to find out what the real problem is. The problem persists across three separate layouts using the same USB device and application. We're currently trying to see if this is related to MUSB only by using an EHCI port on the same board with the same device and application.

Regards, m.

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Re: AW: USB problem on beagleboard clone

[Paul Walmsley]

On Wed, 19 Sep 2012, Maximilian Schwerin wrote:

> They're BeagleBoard XM clones. We're still trying to find out what the 
> real problem is. The problem persists across three separate layouts 
> using the same USB device and application. We're currently trying to see 
> if this is related to MUSB only by using an EHCI port on the same board 
> with the same device and application.

Perhaps you might try this patch:

http://marc.info/?l=linux-omap&m=132976109928744&w=2

Background is here:

http://comments.gmane.org/gmane.linux.ports.arm.omap/71633

The patch is for an EHCI issue, but MUSB is clocked from the same DPLL.


- Paul
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AW: AW: USB problem on beagleboard clone

[Maximilian Schwerin]

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> -----Ursprüngliche Nachricht-----
> Von: Paul Walmsley [mailto:paul@pwsan.com] 
> Gesendet: Mittwoch, 19. September 2012 18:07
> An: Maximilian Schwerin
> Cc: linux-omap@vger.kernel.org; linux-usb@vger.kernel.org
> Betreff: Re: AW: USB problem on beagleboard clone
> 
> On Wed, 19 Sep 2012, Maximilian Schwerin wrote:
> 
> > They're BeagleBoard XM clones. We're still trying to find 
> out what the 
> > real problem is. The problem persists across three separate layouts 
> > using the same USB device and application. We're currently 
> trying to see 
> > if this is related to MUSB only by using an EHCI port on 
> the same board 
> > with the same device and application.
> 
> Perhaps you might try this patch:
> 
> http://marc.info/?l=linux-omap&m=132976109928744&w=2
> 
> Background is here:
> 
> http://comments.gmane.org/gmane.linux.ports.arm.omap/71633
> 
> The patch is for an EHCI issue, but MUSB is clocked from the 
> same DPLL.
> 
> 
> - Paul
> 

Thanks for the hint. I had this in my 3.2 kernel which also failed. I'll try if adding this to 3.6 has any effect.

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