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Subject[PATCH 2/6] usb: gadget: gr_udc: Expand devicetree documentation
Date
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>
---
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


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