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+Freescale SoC SEC Security Engines
+
+Required properties:
+
+- compatible : Should contain entries for this and backward compatible
+  SEC versions, high to low, e.g., "fsl,sec2.1", "fsl,sec2.0"
+- reg : Offset and length of the register set for the device
+- interrupts : the SEC's interrupt number
+- fsl,num-channels : An integer representing the number of channels
+  available.
+- fsl,channel-fifo-len : An integer representing the number of
+  descriptor pointers each channel fetch fifo can hold.
+- fsl,exec-units-mask : The bitmask representing what execution units
+  (EUs) are available. It's a single 32-bit cell. EU information
+  should be encoded following the SEC's Descriptor Header Dword
+  EU_SEL0 field documentation, i.e. as follows:
+
+        bit 0  = reserved - should be 0
+        bit 1  = set if SEC has the ARC4 EU (AFEU)
+        bit 2  = set if SEC has the DES/3DES EU (DEU)
+        bit 3  = set if SEC has the message digest EU (MDEU/MDEU-A)
+        bit 4  = set if SEC has the random number generator EU (RNG)
+        bit 5  = set if SEC has the public key EU (PKEU)
+        bit 6  = set if SEC has the AES EU (AESU)
+        bit 7  = set if SEC has the Kasumi EU (KEU)
+        bit 8  = set if SEC has the CRC EU (CRCU)
+        bit 11 = set if SEC has the message digest EU extended alg set (MDEU-B)
+
+remaining bits are reserved for future SEC EUs.
+
+- fsl,descriptor-types-mask : The bitmask representing what descriptors
+  are available. It's a single 32-bit cell. Descriptor type information
+  should be encoded following the SEC's Descriptor Header Dword DESC_TYPE
+  field documentation, i.e. as follows:
+
+        bit 0  = set if SEC supports the aesu_ctr_nonsnoop desc. type
+        bit 1  = set if SEC supports the ipsec_esp descriptor type
+        bit 2  = set if SEC supports the common_nonsnoop desc. type
+        bit 3  = set if SEC supports the 802.11i AES ccmp desc. type
+        bit 4  = set if SEC supports the hmac_snoop_no_afeu desc. type
+        bit 5  = set if SEC supports the srtp descriptor type
+        bit 6  = set if SEC supports the non_hmac_snoop_no_afeu desc.type
+        bit 7  = set if SEC supports the pkeu_assemble descriptor type
+        bit 8  = set if SEC supports the aesu_key_expand_output desc.type
+        bit 9  = set if SEC supports the pkeu_ptmul descriptor type
+        bit 10 = set if SEC supports the common_nonsnoop_afeu desc. type
+        bit 11 = set if SEC supports the pkeu_ptadd_dbl descriptor type
+
+  ..and so on and so forth.
+
+Optional properties:
+
+- interrupt-parent : the phandle for the interrupt controller that
+  services interrupts for this device.
+
+Example:
+
+        /* MPC8548E */
+        crypto@30000 {
+                compatible = "fsl,sec2.1", "fsl,sec2.0";
+                reg = <0x30000 0x10000>;
+                interrupts = <29 2>;
+                interrupt-parent = <&mpic>;
+                fsl,num-channels = <4>;
+                fsl,channel-fifo-len = <24>;
+                fsl,exec-units-mask = <0xfe>;
+                fsl,descriptor-types-mask = <0x12b0ebf>;
+        };