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usb: gadget: gr_udc: Expand devicetree documentation

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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>
This commit is contained in:
Andreas Larsson 2014-03-27 16:15:54 +01:00 committed by Felipe Balbi
parent 22876266de
commit d9a6ef1bb2
1 changed files with 13 additions and 7 deletions
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20
Documentation/devicetree/bindings/usb/gr-udc.txt
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@ -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.
- 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 : 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.
- 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