Hi Marek,
On Thu, 2015-12-17 at 05:01 +0100, Marek Vasut wrote:
On Wednesday, December 16, 2015 at 08:54:11 PM, Alexey Brodkin wrote:
Hi Marek,
Hi!
On Wed, 2015-12-16 at 17:52 +0100, Marek Vasut wrote:
On Wednesday, December 16, 2015 at 05:05:15 PM, Alexey Brodkin wrote:
This commit adds support of USB 1.1 storage media on AXS103 board. For some yet unknown reason USB 2.0 doesn't work on AXS103 board issuing messages like this: ------------------------>8------------------- AXS# usb start starting USB... USB0: USB EHCI 1.00 scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80 unable to get device descriptor (error=-1) 1 USB Device(s) found ------------------------>8-------------------
Try defining CONFIG_EHCI_IS_TDI , that _might_ help.
Thanks for that tip but it made no difference to me. I need to look deeper into that problem.
I remember seeing that stuff multiple times before, but it might be a different issue. It was usually triggered by some sort of corruption during the transfer. On ARM, that was often caused by cache issues.
Believe me I know how much of a grief caches bring so the first thing I do when seeing unexpected behavior I disable caches :)
Just a bit of a context here. I'm playing with ARC SP board which consists of 2 parts: [1] Baseboard with all peripherals and their connectors [2] Daughterboard with CPU and DDR
Baseboard is connected to CPU-board via AXI tunnel.
And when CPU-board is the one with ASIC based on ARC770 that runs at 700 MHz I see USB 2.0 working perfectly fine.
But if I use CPU-board that sports FPGA with ARC HS38 CPU running at 75 MHz I see the first asynchronous tarnsaction on US 2.0 never happens.
Connect signaltap or chipscope ? :)
Well I don't have either of those tools sitting on my desk but if absolutely required I'll do that :)
In particular in ehci_submit_async() after we enable async. schedule setting CMD_ASE command STS_ASS gets set but then token's status stays active forever i.e. following is always true: --------------------->8--------------------- QT_TOKEN_GET_STATUS(token) & QT_TOKEN_STATUS_ACTIVE --------------------->8---------------------
Note USB host controller, phy and usb dongle are exactly the same. And USB 1.1 (OHCI) works perfectly fine at the same time.
Try adding #define DEBUG at the first line of common/usb.c , so we can get some more debugging info. Also adding the same into common/usb_hub.c helps.
Did that and here's my log:
--------------------->8--------------------- starting USB... USB0: ehci_register: dev='ehci@0xe0040000', ctrl=9fd94100, hccr=e0040000, hcor=e0040010, init=0 Register 1111 NbrPorts 1 USB EHCI 1.00 scanning bus 0 for devices... ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe004000 req=6 (0x6), type=128 (0x80), value=256, index=0 USB_DT_DEVICE request ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=5 (0x5), type=0 (0x0), value=1, index=0 USB_REQ_SET_ADDRESS Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=256, index=0 USB_DT_DEVICE request ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=512, index=0 USB_DT_CONFIG config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=512, index=0 USB_DT_CONFIG config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=9 (0x9), type=0 (0x0), value=1, index=0 USB_REQ_SET_CONFIGURATION Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=768, index=0 USB_DT_STRING config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=769, index=1 USB_DT_STRING config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7c000, udev->dev='ehci@0xe0040000', portnr=0 req=6 (0x6), type=128 (0x80), value=770, index=1 USB_DT_STRING config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=6 (0x6), type=160 (0xa0), value=10496, index=0 USB_DT_HUB config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=6 (0x6), type=160 (0xa0), value=10496, index=0 USB_DT_HUB config ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=0 (0x0), type=160 (0xa0), value=0, index=0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=3 (0x3), type=35 (0x23), value=8, index=1 Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=0 (0x0), type=163 (0xa3), value=0, index=1 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=0 (0x0), type=163 (0xa3), value=0, index=1 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=1 (0x1), type=35 (0x23), value=16, index=1 Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=3 (0x3), type=35 (0x23), value=4, index=1 Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=0 (0x0), type=163 (0xa3), value=0, index=1 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=1 (0x1), type=35 (0x23), value=20, index=1 Len is 0 ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd7b100, udev->dev='usb_hub', portnr=1 dev=9fd7b100, pipe=80000083, buffer=9fd7ae00, length=64, req=9fd7ad00 req=6 (0x6), type=128 (0x80), value=256 (0x100), index=0 EHCI timed out on TD - token=0x80008c80 dev=0, usbsts=0x1, p[1]=0x1005, p[2]=0x0 unable to get device descriptor (error=-1) ehci_submit_control_msg: dev='ehci@0xe0040000', udev=9fd94380, udev->dev='usb_hub', portnr=0 req=1 (0x1), type=35 (0x23), value=1, index=1 Len is 0 1 USB Device(s) found AXS# --------------------->8---------------------
Makes any sense?
Note in case of ARC770 the log is very similar except the fact that it goes further to successful device detection.
-Alexey