From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Larsson Subject: [PATCH 2/6] usb: gadget: gr_udc: Expand devicetree documentation Date: Thu, 9 Jan 2014 11:54:14 +0100 Message-ID: <1389264858-32664-3-git-send-email-andreas@gaisler.com> References: <1389264858-32664-1-git-send-email-andreas@gaisler.com> Return-path: In-Reply-To: <1389264858-32664-1-git-send-email-andreas@gaisler.com> Sender: linux-kernel-owner@vger.kernel.org To: Felipe Balbi , Greg Kroah-Hartman Cc: Mark Rutland , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, software@gaisler.com List-Id: devicetree@vger.kernel.org Provide more information on the two different interrupt cases and more information of endpoint buffer sizes. Suggested by Mark Rutland. Signed-off-by: Andreas Larsson --- Documentation/devicetree/bindings/usb/gr-udc.txt | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/gr-udc.txt b/Documentation/devicetree/bindings/usb/gr-udc.txt index 0c5118f..e944522 100644 --- a/Documentation/devicetree/bindings/usb/gr-udc.txt +++ b/Documentation/devicetree/bindings/usb/gr-udc.txt @@ -12,17 +12,23 @@ Required properties: - reg : Address and length of the register set for the device -- interrupts : Interrupt numbers for this device +- interrupts : Interrupt numbers for this device. Either one interrupt number + for all interrupts, or one for status related interrupts, one for IN + endpoint related interrupts and one for OUT endpoint related interrupts. Optional properties: -- epobufsizes : An array of buffer sizes for OUT endpoints. If the property is - not present, or for endpoints outside of the array, 1024 is assumed by - the driver. - -- epibufsizes : An array of buffer sizes for IN endpoints. If the property is - not present, or for endpoints outside of the array, 1024 is assumed by - the driver. +- epobufsizes : Array of buffer sizes for OUT endpoints when they differ + from the default size of 1024. The array is indexed by the OUT endpoint + number. If the property is present it typically contains one entry for + each OUT endpoint of the core. Fewer entries overrides the default sizes + only for as many endpoints as the array contains. + +- epibufsizes : Array of buffer sizes for IN endpoints when they differ + from the default size of 1024. The array is indexed by the IN endpoint + number. If the property is present it typically contains one entry for + each IN endpoint of the core. Fewer entries overrides the default sizes + only for as many endpoints as the array contains. For further information look in the documentation for the GLIB IP core library: http://www.gaisler.com/products/grlib/grip.pdf -- 1.7.10.4