On Thu, Nov 25, 2010 at 03:35:16AM -0500, Zhang, Sonic wrote:
-----Original Message-----
From: vapier.adi@xxxxxxxxx [mailto:vapier.adi@xxxxxxxxx] On
Behalf Of Mike Frysinger
Sent: Wednesday, November 24, 2010 10:37 AM
To: Bob Liu; Zhang, Sonic; uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx
Cc: Ajay Kumar Gupta; linux-usb@xxxxxxxxxxxxxxx; balbi@xxxxxx
Subject: Re: [PATCH] musb_host: Fix high bandwidth iso transfer issue
On Tue, Nov 23, 2010 at 06:15, Felipe Balbi wrote:
On Tue, Nov 23, 2010 at 03:31:34PM +0530, Ajay Kumar Gupta wrote:
Commit 9f445cb [USB: musb: disable double buffering for older RTL
versions] is breaking the high bandwidth isochronous transfer as
hb_mult is not getting programmed into RXMAXP register.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
I'll take this one in.
Mike, we need to get blackfin double buffering issue sorted out as
these blackfin hacks are breaking other functionalities.
The blackfin double buffering issue is a hardware anomaly 05000465 in
blackfin implementation. Please refer to the blackfin anomaly list
http://www.analog.com/static/imported-files/ic_anom/BF_523_525_527_527C_anomaly_RevH.pdf
and
http://www.analog.com/static/imported-files/ic_anom/ADSP-BF542_544_547_548_549_revJ.pdf
The only work around is to config the receive FIFO into single buffer
mode.
And how to do that ?
--
balbi
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