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Commit d9a6ef1b authored by Andreas Larsson's avatar Andreas Larsson Committed by Felipe Balbi
Browse files

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: default avatarAndreas Larsson <andreas@gaisler.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 22876266

Documentation/devicetree/bindings/usb/gr-udc.txt

+14 −8
Original line number Diff line number Diff line
@@ -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