Add anatop phandle which is used to access anatop registers to
control PHY's power and other USB operations.

Signed-off-by: Peter Chen <peter.c...@freescale.com>
---
 Documentation/devicetree/bindings/usb/mxs-phy.txt |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt 
b/Documentation/devicetree/bindings/usb/mxs-phy.txt
index ea5134a..cef181a 100644
--- a/Documentation/devicetree/bindings/usb/mxs-phy.txt
+++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
@@ -8,10 +8,12 @@ Required properties:
   "fsl,imx23-usbphy" is still a fallback for other strings
 - reg: Should contain registers location and length
 - interrupts: Should contain phy interrupt
+- fsl,anatop: phandle for anatop register, it is only for imx6 SoC series
 
 Example:
 usbphy1: usbphy@020c9000 {
        compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
        reg = <0x020c9000 0x1000>;
        interrupts = <0 44 0x04>;
+       fsl,anatop = <&anatop>;
 };
-- 
1.7.8


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