[PATCH 04/10] Doc: usb: ci-hdrc-usb2: add ahb-burst-config for binding doc

[Peter Chen]

It is used to change ahb burst configuration for platforms, it is
vendor specific.

Signed-off-by: Peter Chen <peter.c...@freescale.com>
---
 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt 
b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index 4159c8c..3c377a3 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -32,6 +32,8 @@ Optional properties:
 - external-vbus-divider: (FSL only) enables off-chip resistor divider for Vbus
 - itc-setting: interrupt threshold control register control, the setting
   should be aligned with ITC bits at register USBCMD.
+- ahb-burst-config: it is vendor dependent, the required value should be
+  aligned with AHBBRST at SBUSCFG, the range is from 0x0 to 0x7.
 
 Example:
 
@@ -44,4 +46,6 @@ Example:
                phy-names = "usb-phy";
                vbus-supply = <&reg_usb0_vbus>;
                gadget-itc-setting = <0x4>; /* 4 micro-frames */
+                /* Incremental burst of unspecified length */
+               ahb-burst-config = <0x0>;
        };
-- 
1.9.1

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