Documentation/devicetree/bindings/arm/fsl.txt

i.MX53 Automotive Reference Design Board
Required root node properties:
    - compatible = "fsl,imx53-ard", "fsl,imx53";

i.MX53 Evaluation Kit
Required root node properties:
    - compatible = "fsl,imx53-evk", "fsl,imx53";

i.MX53 Quick Start Board
Required root node properties:
    - compatible = "fsl,imx53-qsb", "fsl,imx53";

i.MX53 Smart Mobile Reference Design Board
Required root node properties:
    - compatible = "fsl,imx53-smd", "fsl,imx53";