Messages in this thread | | | Date | Wed, 9 Jul 2014 16:07:49 -0700 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v5] USB: ehci-pci: USB host controller support for Intel Quark X1000 |
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On Wed, Jul 02, 2014 at 01:58:18AM -0700, Chen, Alvin wrote: > From: Bryan O'Donoghue <bryan.odonoghue@intel.com> > > The EHCI packet buffer in/out threshold is programmable for Intel Quark X1000 > USB host controller, and the default value is 0x20 dwords. The in/out threshold > can be programmed to 0x80 dwords (512 Bytes) to maximize the perfomrance, > but only when isochronous/interrupt transactions are not initiated by the USB > host controller. This patch is to reconfigure the packet buffer in/out > threshold as maximal as possible to maximize the performance, and 0x7F dwords > (508 Bytes) should be used because the USB host controller initiates > isochronous/interrupt transactions. > > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@intel.com> > Signed-off-by: Alvin (Weike) Chen <alvin.chen@intel.com> > Acked-by: Alan Stern <stern@rowland.harvard.edu> > Reviewed-by: Jingoo Han <jg1.han@samsung.com> > --- > Changlog v5: > * Correct the wrong comment style. > > drivers/usb/host/ehci-pci.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+)
This should go to stable kernel releases as well, right?
thanks,
greg k-h
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