Hi Elvis,
I have tried with external powered usb hub with kernel limit increase to
400mA. I am still getting the same error. I am not sure that my hub is
able to produce 300mA output.
I am using hub model BF-4700 (Bafo Technology) and no where in the manual
they have mentioned the output current per port.
is there any way to find out output current per port ?
Here is the output of lsusb -v when hub is connected:
bash-3.00# lsusb -v
Bus 002 Device 001: ID 1d6b:0002
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1d6b
idProduct 0x0002
bcdDevice 2.06
iManufacturer 3 Linux 2.6.28-rc8-omap1 ehci_hcd
iProduct 2 OMAP-EHCI Host Controller
iSerial 1 ehci-omap.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
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 bytes 4 three times
bInterval 12
Bus 001 Device 003: ID 07d1:3c07 D-Link System
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x07d1 D-Link System
idProduct 0x3c07
bcdDevice 0.01
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 53
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
MaxPower 300mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 5
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 bytes 512 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 bytes 512 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 bytes 512 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 bytes 512 once
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 bytes 512 once
bInterval 0
Bus 001 Device 002: ID 0409:0059 NEC Corp. HighSpeed Hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x0409 NEC Corp.
idProduct 0x0059 HighSpeed Hub
bcdDevice 1.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
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 0
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 bytes 1 once
bInterval 12
Bus 001 Device 001: ID 1d6b:0002
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1d6b
idProduct 0x0002
bcdDevice 2.06
iManufacturer 3 Linux 2.6.28-rc8-omap1 musb-hcd
iProduct 2 MUSB HDRC host driver
iSerial 1 musb_hdrc
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
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 bytes 4 three times
bInterval 12
bash-3.00#
Thanks
Sandeep
On Tue, Jul 14, 2009 at 2:40 PM, sandeep gupta <[email protected]> wrote:
> Hi Elvis,
>
> Here id the output of "lsusb -a" on my host machine:
> Bus 005 Device 004: ID 07d1:3c07 D-Link System
> Device Descriptor:
> bLength 18
> bDescriptorType 1
> bcdUSB 2.00
> bDeviceClass 0 (Defined at Interface level)
> bDeviceSubClass 0
> bDeviceProtocol 0
> bMaxPacketSize0 64
> idVendor 0x07d1 D-Link System
> idProduct 0x3c07
> bcdDevice 0.01
> iManufacturer 1 Ralink
> iProduct 2 802.11 bg WLAN
> iSerial 0
> bNumConfigurations 1
> Configuration Descriptor:
> bLength 9
> bDescriptorType 2
> wTotalLength 53
> bNumInterfaces 1
> bConfigurationValue 1
> iConfiguration 0
> bmAttributes 0x80
> (Bus Powered)
> MaxPower 300mA
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 0
> bAlternateSetting 0
> bNumEndpoints 5
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 255 Vendor Specific Subclass
> bInterfaceProtocol 255 Vendor Specific Protocol
> iInterface 0
> Endpoint Descriptor:
> bLength 7
> bDescriptorType 5
> bEndpointAddress 0x81 EP 1 IN
> 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 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 0x02 EP 2 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 0x03 EP 3 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 0x04 EP 4 OUT
> bmAttributes 2
> Transfer Type Bulk
> Synch Type None
> Usage Type Data
> wMaxPacketSize 0x0200 1x 512 bytes
> bInterval 0
>
> Yes it seams this usb wifi needs 300mA current. Currently I am not having
> any usb hub (external power supplied).
> I will test once I get a hub.
>
> Thanks,
> Sandy
>
>
> On Mon, Jul 13, 2009 at 8:07 PM, Elvis Dowson <[email protected]>wrote:
>
>> Hi, Type the following command to get more diagnostic information:
>>
>> $ lsusb -a
>>
>> The Ralink RT2571WF USB Wifi module chipeset requires 300mA of power to
>> function properly. Your USB port might not have sufficient power to activate
>> the USB device using your current USB OTG port. This was the same in my
>> case, using a gumstix Overo Earth TI OMAP 3503 wifi module + palo43 board,
>> whose USB port could only supply 100mA on each port.
>>
>> Even if you use a USB hub, you really need to make sure that it can supply
>> 300mA of power on each USB port or mode.
>>
>> In the case of this specific hardware configuration, power was separately
>> applied from an external power source, and the kernel limit was increased by
>> applying the following patch:
>>
>> diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c
>> index 516848d..73c3598 100644
>> --- a/drivers/usb/host/sl811_cs.c
>> +++ b/drivers/usb/host/sl811_cs.c
>> @@ -82,7 +82,7 @@ static void release_platform_dev(struct device * dev)
>>
>> static struct sl811_platform_data platform_data = {
>> .potpg = 100,
>> - .power = 50, /* == 100mA */
>> + .power = 200, /* == 400mA */
>> // .reset = ... FIXME: invoke CF reset on the card
>> };
>>
>>
>> Best regards,
>>
>> Elvis
>>
>> >>
>>
>
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