>
> Unfortunately, similar reports on the U-Boot mailing list have been met
> with no useful information. I'm asking here because 1) the setup works on
> Linux, and 2) there are a lot of knowledgable USB folks here.
>
> That being said, my issue has to do with a Freescale PowerPC SoC based
> system: P4080 with dual ehci-fsl USB controllers. One of them is internal
> only, and has a DisplayLink device attached. The second is connected to
> an internal USB2514 hub, self-powered. The 2514 is then connected to 3
> external ports. The issues are to do with the second hcd and certain
> devices connected to the USB2514 hub.
>
> Here is lsusb -t from Linux (as I said, things work in Linux):
>
> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=fsl-ehci/1p, 480M
> |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=udlfb,
> 480M
> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=fsl-ehci/1p, 480M
> |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
> |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/3p, 12M
> |__ Port 1: Dev 4, If 0, Class=Human Interface Device,
> Driver=usbhid, 1.5M
> |__ Port 1: Dev 4, If 1, Class=Human Interface Device,
> Driver=usbhid, 1.5M
> |__ Port 3: Dev 5, If 0, Class=Human Interface Device,
> Driver=usbhid, 1.5M
>
> So the problem in U-Boot has to do with device 3 on bus 1, which is a
> Dell USB keyboard with internal hub (it has two ports on the keyboard for
> attaching a mouse, etc).
>
> Now, on U-Boot, if I connect a standard device such as a USB stick or USB
> mouse, to the 2514 (device 2, bus 1), it is detected and works without
> issue.
>
> However, this external Dell Keyboard Hub (and a few other similar
> keyboard devices) cause an error when U-Boot tries to probe it. The error
> occurs when retrieving the descriptor. U-Boot has both methods (8byte and
> 64byte) for retrieving descriptor, and both fail the same way. The status
> returned from the hcd is 0x4a (Stalled, XactErr, SplitXState). I've even
> tried setting the device address first (which succeeds) and then
> retrieving the descriptor, but that descriptor request fails the same way.
>
> Note that all other devices in this tree are detected fine, including the
> 2514 Hub, and simple devices attached to it.
>
> Here is the code in question from U-Boot usb.c:
>
> desc = (struct usb_device_descriptor *)tmpbuf;
> dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64
> bytes */
> /* Default to 64 byte max packet size */
> dev->maxpacketsize = PACKET_SIZE_64;
> dev->epmaxpacketin[0] = 64;
> dev->epmaxpacketout[0] = 64;
>
> err = usb_control_msg(dev, usb_rcvaddr0pipe(),
> USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
> USB_DT_DEVICE << 8, 0, desc, 64,
> USB_CNTL_TIMEOUT);
>
> if (err < 0) {
> printf("usb_new_device: usb_get_descriptor() failed\n");
> return 1;
> }
>
> This control message fails. Here's the full lsusb output from Linux:
>
- If you have a usb bus analyzer, please check if the GET_DESCRPTOR sends out
successfully.
(Most probably, I don't think it sends out)
- You may need to check if the value for qh and qtd are the same with Linux
(for GET_DESCRITPOR)
The hardware will use qh and qtd to sends data. You can dump memory for that.
At linux, the code to print current qh and qtd: at drivers/usb/host/ehci-q.c
(fn: qh_link_async)
NOTE: You can only print current qh/qtd before the async schedule has begun.
{
int i;
struct ehci_qtd *qtd;
u32 *qh_addr_virt = qh->hw;
printk("addr of qh 0x%x\n", qh_addr_virt);
for (i=0; i<12;i++)
printk("0x%x\n", *(u32 *)(qh_addr_virt + i));
qtd = list_entry (qh->qtd_list.next,
struct ehci_qtd, qtd_list);
printk("addr of qtd 0x%x\n", qtd);
for (i=0; i<8;i++)
printk("0x%x\n", *((u32 *)qtd + i));
}
Peter
> Bus 002 Device 002: ID 17e9:047b DisplayLink
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x17e9 DisplayLink
> idProduct 0x047b
> bcdDevice 1.06
> iManufacturer 1 DisplayLink
> iProduct 2 CTS-1000
> iSerial 3 00000000-000000
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 55
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 500mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 2
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 0
> bInterfaceProtocol 0
> iInterface 0
> ** UNRECOGNIZED: 17 5f 01 00 15 05 00 01 03 00 04 04 01 00 03 60
> 00 02 04 60 e3 16 00
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x01 EP 1 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0008 1x 8 bytes
> bInterval 4
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 1 Single TT
> bMaxPacketSize0 64
> idVendor 0x1d6b Linux Foundation
> idProduct 0x0002 2.0 root hub
> bcdDevice 3.11
> iManufacturer 3 Linux 3.11.0-5-powerpc-e500mc ehci_hcd
> iProduct 2 Freescale On-Chip EHCI Host Controller
> iSerial 1 fsl-ehci.1
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 12
> Hub Descriptor:
> bLength 9
> bDescriptorType 41
> nNbrPorts 1
> wHubCharacteristic 0x0009
> Per-port power switching
> Per-port overcurrent protection
> TT think time 8 FS bits
> bPwrOn2PwrGood 10 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> DeviceRemovable 0x00
> PortPwrCtrlMask 0xff
> Hub Port Status:
> Port 1: 0000.0503 highspeed power enable connect
> Device Status: 0x0001
> Self Powered
>
> Bus 001 Device 005: ID 046d:c00e Logitech, Inc. M-BJ58/M-BJ69 Optical
> Wheel Mouse
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 8
> idVendor 0x046d Logitech, Inc.
> idProduct 0xc00e M-BJ58/M-BJ69 Optical Wheel Mouse
> bcdDevice 11.10
> iManufacturer 1 Logitech
> iProduct 2 USB-PS/2 Optical Mouse
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 34
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xa0
> (Bus Powered)
> Remote Wakeup
> MaxPower 98mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 3 Human Interface Device
> bInterfaceSubClass 1 Boot Interface Subclass
> bInterfaceProtocol 2 Mouse
> iInterface 0
> HID Device Descriptor:
> bLength 9
> bDescriptorType 33
> bcdHID 1.10
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 52
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 10
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 001 Device 004: ID 413c:2006 Dell Computer Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 1.10
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 8
> idVendor 0x413c Dell Computer Corp.
> idProduct 0x2006
> bcdDevice 48.00
> iManufacturer 1 Dell
> iProduct 2 Dell USB Keyboard Hub
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 59
> bNumInterfaces 2
> bConfigurationValue 1
> iConfiguration 3 83NT6504V110
> bmAttributes 0xa0
> (Bus Powered)
> Remote Wakeup
> MaxPower 90mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 3 Human Interface Device
> bInterfaceSubClass 1 Boot Interface Subclass
> bInterfaceProtocol 1 Keyboard
> iInterface 2 Dell USB Keyboard Hub
> HID Device Descriptor:
> bLength 9
> bDescriptorType 33
> bcdHID 1.10
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 65
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0008 1x 8 bytes
> bInterval 10
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 3 Human Interface Device
> bInterfaceSubClass 0 No Subclass
> bInterfaceProtocol 0 None
> iInterface 2 Dell USB Keyboard Hub
> HID Device Descriptor:
> bLength 9
> bDescriptorType 33
> bcdHID 1.10
> bCountryCode 0 Not supported
> bNumDescriptors 1
> bDescriptorType 34 Report
> wDescriptorLength 142
> Report Descriptors:
> ** UNAVAILABLE **
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x82 EP 2 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 255
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 001 Device 003: ID 413c:1004 Dell Computer Corp.
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 1.10
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 0 Full speed (or root) hub
> bMaxPacketSize0 8
> idVendor 0x413c Dell Computer Corp.
> idProduct 0x1004
> bcdDevice 48.01
> iManufacturer 1 Dell
> iProduct 2 Dell USB Keyboard Hub
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 2 Dell USB Keyboard Hub
> bmAttributes 0xa0
> (Bus Powered)
> Remote Wakeup
> MaxPower 100mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 2 Dell USB Keyboard Hub
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0001 1x 1 bytes
> bInterval 24
> Hub Descriptor:
> bLength 9
> bDescriptorType 41
> nNbrPorts 3
> wHubCharacteristic 0x000d
> Per-port power switching
> Compound device
> Per-port overcurrent protection
> bPwrOn2PwrGood 22 * 2 milli seconds
> bHubContrCurrent 100 milli Ampere
> DeviceRemovable 0x02
> PortPwrCtrlMask 0xff
> Hub Port Status:
> Port 1: 0000.0303 lowspeed power enable connect
> Port 2: 0000.0100 power
> Port 3: 0000.0303 lowspeed power enable connect
> Device Status: 0x0000
> (Bus Powered)
>
> Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 2 TT per port
> bMaxPacketSize0 64
> idVendor 0x0424 Standard Microsystems Corp.
> idProduct 0x2514 USB 2.0 Hub
> bcdDevice 0.00
> iManufacturer 1 (error)
> iProduct 2 (error)
> iSerial 3 (error)
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 41
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 100mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 1 Single TT
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0001 1x 1 bytes
> bInterval 12
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 1
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 2 TT per port
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0001 1x 1 bytes
> bInterval 12
> Hub Descriptor:
> bLength 9
> bDescriptorType 41
> nNbrPorts 4
> wHubCharacteristic 0x0009
> Per-port power switching
> Per-port overcurrent protection
> TT think time 8 FS bits
> bPwrOn2PwrGood 50 * 2 milli seconds
> bHubContrCurrent 50 milli Ampere
> DeviceRemovable 0x00
> PortPwrCtrlMask 0xff
> Hub Port Status:
> Port 1: 0000.0103 power enable connect
> Port 2: 0000.0100 power
> Port 3: 0000.0100 power
> Port 4: 0000.0100 power
> Device Qualifier (for other device speed):
> bLength 10
> bDescriptorType 6
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 0 Full speed (or root) hub
> bMaxPacketSize0 64
> bNumConfigurations 1
> Device Status: 0x0001
> Self Powered
>
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 9 Hub
> bDeviceSubClass 0 Unused
> bDeviceProtocol 1 Single TT
> bMaxPacketSize0 64
> idVendor 0x1d6b Linux Foundation
> idProduct 0x0002 2.0 root hub
> bcdDevice 3.11
> iManufacturer 3 Linux 3.11.0-5-powerpc-e500mc ehci_hcd
> iProduct 2 Freescale On-Chip EHCI Host Controller
> iSerial 1 fsl-ehci.0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 25
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0xe0
> Self Powered
> Remote Wakeup
> MaxPower 0mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 9 Hub
> bInterfaceSubClass 0 Unused
> bInterfaceProtocol 0 Full speed (or root) hub
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> bmAttributes 3
> Transfer Type Interrupt
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0004 1x 4 bytes
> bInterval 12
> Hub Descriptor:
> bLength 9
> bDescriptorType 41
> nNbrPorts 1
> wHubCharacteristic 0x0009
> Per-port power switching
> Per-port overcurrent protection
> TT think time 8 FS bits
> bPwrOn2PwrGood 10 * 2 milli seconds
> bHubContrCurrent 0 milli Ampere
> DeviceRemovable 0x00
> PortPwrCtrlMask 0xff
> Hub Port Status:
> Port 1: 0000.0503 highspeed power enable connect
> Device Status: 0x0001
> Self Powered
>
>
> --
> Servergy : http://www.servergy.com/
> SwissDisk : http://www.swissdisk.com/
> Ubuntu : http://www.ubuntu.com/
> My Blog : http://ben-collins.blogspot.com/
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