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| author | Andreas Larsson <andreas@gaisler.com> | 2014-03-27 16:15:54 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-04-21 14:07:26 -0500 |
| commit | d9a6ef1bb27e589ec40f792f3e742c3f54cbdb28 (patch) | |
| tree | e9392b8e35e5f6c08be0c55b058ad8a188877fde /Documentation | |
| parent | 22876266de43ec24ae93f635490c40edabaf8278 (diff) | |
| download | op-kernel-dev-d9a6ef1bb27e589ec40f792f3e742c3f54cbdb28.zip op-kernel-dev-d9a6ef1bb27e589ec40f792f3e742c3f54cbdb28.tar.gz | |
usb: gadget: gr_udc: Expand devicetree documentation
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 <andreas@gaisler.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/gr-udc.txt | 22 |
1 files 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 |
