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