Documentation/devicetree/bindings/mips/brcm/brcm,bmips.txt

* Broadcom MIPS (BMIPS) CPUs

Required properties:
- compatible: "brcm,bmips3300", "brcm,bmips4350", "brcm,bmips4380",
  "brcm,bmips5000"

- mips-hpt-frequency: This is common to all CPUs in the system so it lives
  under the "cpus" node.