|  | * Freescale MXS USB Phy Device | 
|  |  | 
|  | Required properties: | 
|  | - compatible: should contain: | 
|  | * "fsl,imx23-usbphy" for imx23 and imx28 | 
|  | * "fsl,imx6q-usbphy" for imx6dq and imx6dl | 
|  | * "fsl,imx6sl-usbphy" for imx6sl | 
|  | * "fsl,vf610-usbphy" for Vybrid vf610 | 
|  | * "fsl,imx6sx-usbphy" for imx6sx | 
|  | * "fsl,imx6ul-usbphy" for imx6ul | 
|  | "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 | 
|  |  | 
|  | Optional properties: | 
|  | - tx-d-cal: Try to adjust this value to improve signal quality, and pass | 
|  | USB Certification, the value is from 0x0 to 0xf, and the register offset | 
|  | is 0x10 (USBPHY_TX). | 
|  |  | 
|  | Example: | 
|  | usbphy1: usbphy@020c9000 { | 
|  | compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy"; | 
|  | reg = <0x020c9000 0x1000>; | 
|  | interrupts = <0 44 0x04>; | 
|  | fsl,anatop = <&anatop>; | 
|  | tx-d-cal = <0x5>; | 
|  | }; |