From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH 2/2] Documentation: dt: add an optional dma-desc-enable property for dwc2 usb Date: Mon, 5 May 2014 17:23:05 -0500 Message-ID: <1399328585-30949-2-git-send-email-dinguyen@altera.com> References: <1399328585-30949-1-git-send-email-dinguyen@altera.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1399328585-30949-1-git-send-email-dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, paulz-HKixBCOQz3hWk0Htik3J/w@public.gmane.org Cc: dinh.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Dinh Nguyen List-Id: devicetree@vger.kernel.org From: Dinh Nguyen The "dma-desc-enable" property can be used to disable descriptor DMA mode for the DWC2 USB IP. Signed-off-by: Dinh Nguyen --- Documentation/devicetree/bindings/usb/dwc2.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt index b8b6871..37af3bc 100644 --- a/Documentation/devicetree/bindings/usb/dwc2.txt +++ b/Documentation/devicetree/bindings/usb/dwc2.txt @@ -14,6 +14,11 @@ Refer to clk/clock-bindings.txt for generic clock consumer properties Optional properties: - phys: phy provider specifier - phy-names: shall be "device" +- dma-desc-enable: This property is used to disable descriptor DMA support. + The reason why this property is needed is that even if the HW supports + description DMA support, it does not support it for SPLIT transactions. + So this property can be used to optionally disable descriptor DMA + support. Refer to phy/phy-bindings.txt for generic phy consumer properties Example: -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html