linux/Documentation/devicetree/bindings/mtd/spear_smi.txt
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   1* SPEAr SMI
   2
   3Required properties:
   4- compatible : "st,spear600-smi"
   5- reg : Address range of the mtd chip
   6- #address-cells, #size-cells : Must be present if the device has sub-nodes
   7  representing partitions.
   8- interrupt-parent: Should be the phandle for the interrupt controller
   9  that services interrupts for this device
  10- interrupts: Should contain the STMMAC interrupts
  11- clock-rate : Functional clock rate of SMI in Hz
  12
  13Optional properties:
  14- st,smi-fast-mode : Flash supports read in fast mode
  15
  16Example:
  17
  18        smi: flash@fc000000 {
  19                compatible = "st,spear600-smi";
  20                #address-cells = <1>;
  21                #size-cells = <1>;
  22                reg = <0xfc000000 0x1000>;
  23                interrupt-parent = <&vic1>;
  24                interrupts = <12>;
  25                clock-rate = <50000000>;        /* 50MHz */
  26
  27                flash@f8000000 {
  28                        st,smi-fast-mode;
  29                        ...
  30                };
  31        };
  32