From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2 2/4] usb: dwc2: Add binding for AHB burst Date: Fri, 18 Nov 2016 08:13:31 -0600 Message-ID: <20161118141331.pbzrw5dtkkwp7e75@rob-hp-laptop> References: <7fa1c1c4d703c435d698cdf140c9d43163347f1d.1479339900.git.johnyoun@synopsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <7fa1c1c4d703c435d698cdf140c9d43163347f1d.1479339900.git.johnyoun-HKixBCOQz3hWk0Htik3J/w@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: John Youn Cc: Felipe Balbi , linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Mark Rutland , Christian Lamparter , Stefan Wahren List-Id: devicetree@vger.kernel.org On Wed, Nov 16, 2016 at 03:47:18PM -0800, John Youn wrote: > Add the "snps,ahb-burst" binding and read it in. > > This property controls which burst type to perform on the AHB bus as a > master in internal DMA mode. This overrides the legacy param value, > which we need to keep around for now since several platforms use it. > > Some platforms may see better or worse performance based on this > value. The HAPS platform is one example where all INCRx have worse > performance than INCR. > > Other platforms (such as the Canyonlands board) report that the default > value causes system hangs. > > Signed-off-by: John Youn > Cc: Christian Lamparter > --- > Documentation/devicetree/bindings/usb/dwc2.txt | 2 + Acked-by: Rob Herring > drivers/usb/dwc2/core.h | 9 +++++ > drivers/usb/dwc2/params.c | 56 ++++++++++++++++++++++++++ > 3 files changed, 67 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html