doc: dt-binding: ci-hdrc-usb2: improve property description
Improve the description of properties "tx-burst-size-dword"
and "rx-burst-size-dword".
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Shanw Guo <shawnguo@kernel.org>
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index 77946f5..e4e30cc 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -41,11 +41,15 @@
- tx-burst-size-dword: it is vendor dependent, the tx burst size in dword
(4 bytes), This register represents the maximum length of a the burst
in 32-bit words while moving data from system memory to the USB
- bus, changing this value takes effect only the SBUSCFG.AHBBRST is 0.
+ bus, the value of this property will only take effect if property
+ "ahb-burst-config" is set to 0, if this property is missing the reset
+ default of the hardware implementation will be used.
- rx-burst-size-dword: it is vendor dependent, the rx burst size in dword
(4 bytes), This register represents the maximum length of a the burst
in 32-bit words while moving data from the USB bus to system memory,
- changing this value takes effect only the SBUSCFG.AHBBRST is 0.
+ the value of this property will only take effect if property
+ "ahb-burst-config" is set to 0, if this property is missing the reset
+ default of the hardware implementation will be used.
- extcon: phandles to external connector devices. First phandle should point to
external connector, which provide "USB" cable events, the second should point
to external connector device, which provide "USB-HOST" cable events. If one