RE: [PATCH 1/3] USB: musb: Blackfin: use ep5 for bulk-in and ep6 for bulk-out

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



 

>-----Original Message-----
>From: Felipe Balbi [mailto:felipe.balbi@xxxxxxxxx] 
>Sent: Monday, December 21, 2009 11:06 PM
>To: ext Mike Frysinger
>Cc: linux-usb@xxxxxxxxxxxxxxx; Balbi Felipe 
>(Nokia-D/Helsinki); uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx; 
>Bryan Wu; Cai, Cliff; Greg KH
>Subject: Re: [PATCH 1/3] USB: musb: Blackfin: use ep5 for 
>bulk-in and ep6 for bulk-out
>
>On Mon, Dec 21, 2009 at 03:49:51PM +0100, ext Mike Frysinger wrote:
>>From: Bryan Wu <cooloney@xxxxxxxxxx>
>>
>>Normally, the musb uses ep1 as the bidirectional bulk endpoint.  This 
>>won't work on the Blackfin musb as all endpoints (except ep0) 
>are unidirectional.
>>Further, ep1-ep4 have a small 128 byte FIFO which makes them 
>>undesirable for bulk endpoints (which need more like a 512 
>byte FIFO).  
>>This leaves us with ep5-ep7 which have 1024 byte FIFOs and can be 
>>configured as either in/out and bulk/interrupt/iso on the fly.

Sorry, it's the usb gadget's behaviour,not musb specific.

Cliff
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux