powerpc/85xx: Add SEC6.0 device tree

SEC 6 is as Freescale's Cryptographic Accelerator and Assurance Module (CAAM).

Currently Freescale powerpc chip C29X is embeded with SEC 6.

SEC 6 device tree binding include:

   -SEC 6 Node

   -Job Ring Node

   -Full Example

=====================================================================

SEC 6 Node

Description

    Node defines the base address of the SEC 6 block.

    This block specifies the address range of all global

    configuration registers for the SEC 6 block.

    For example, In C293, we could see three SEC 6 node.

PROPERTIES

   - compatible

      Usage: required

      Value type: <string>

      Definition: Must include "fsl,sec-v6.0".

   - fsl,sec-era

      Usage: optional

      Value type: <u32>

      Definition: A standard property. Define the 'ERA' of the SEC

          device.

   - #address-cells

       Usage: required

       Value type: <u32>

       Definition: A standard property.  Defines the number of cells

           for representing physical addresses in child nodes.

   - #size-cells

       Usage: required

       Value type: <u32>

       Definition: A standard property.  Defines the number of cells

           for representing the size of physical addresses in

           child nodes.

   - reg

      Usage: required

      Value type: <prop-encoded-array>

      Definition: A standard property.  Specifies the physical

          address and length of the SEC 6 configuration registers.

   - ranges

       Usage: required

       Value type: <prop-encoded-array>

       Definition: A standard property.  Specifies the physical address

           range of the SEC 6.0 register space (-SNVS not included).  A

           triplet that includes the child address, parent address, &

           length.

   Note: All other standard properties (see the ePAPR) are allowed

   but are optional.

EXAMPLE

	crypto@a0000 {

		compatible = "fsl,sec-v6.0";

		fsl,sec-era = <6>;

		#address-cells = <1>;

		#size-cells = <1>;

		reg = <0xa0000 0x20000>;

		ranges = <0 0xa0000 0x20000>;

	};

=====================================================================

Job Ring (JR) Node

    Child of the crypto node defines data processing interface to SEC 6

    across the peripheral bus for purposes of processing

    cryptographic descriptors. The specified address

    range can be made visible to one (or more) cores.

    The interrupt defined for this node is controlled within

    the address range of this node.

  - compatible

      Usage: required

      Value type: <string>

      Definition: Must include "fsl,sec-v6.0-job-ring".

  - reg

      Usage: required

      Value type: <prop-encoded-array>

      Definition: Specifies a two JR parameters:  an offset from

           the parent physical address and the length the JR registers.

   - interrupts

      Usage: required

      Value type: <prop_encoded-array>

      Definition:  Specifies the interrupts generated by this

           device.  The value of the interrupts property

           consists of one interrupt specifier. The format

           of the specifier is defined by the binding document

           describing the node's interrupt parent.

EXAMPLE

	jr@1000 {

		compatible = "fsl,sec-v6.0-job-ring";

		reg = <0x1000 0x1000>;

		interrupts = <49 2 0 0>;

	};

===================================================================

Full Example

Since some chips may contain more than one SEC, the dtsi contains

only the node contents, not the node itself.  A chip using the SEC

should include the dtsi inside each SEC node.  Example:

In qoriq-sec6.0.dtsi:

	compatible = "fsl,sec-v6.0";

	fsl,sec-era = <6>;

	#address-cells = <1>;

	#size-cells = <1>;

	jr@1000 {

		compatible = "fsl,sec-v6.0-job-ring",

			     "fsl,sec-v5.2-job-ring",

			     "fsl,sec-v5.0-job-ring",

			     "fsl,sec-v4.4-job-ring",

			     "fsl,sec-v4.0-job-ring";

		reg	   = <0x1000 0x1000>;

	};

	jr@2000 {

		compatible = "fsl,sec-v6.0-job-ring",

			     "fsl,sec-v5.2-job-ring",

			     "fsl,sec-v5.0-job-ring",

			     "fsl,sec-v4.4-job-ring",

			     "fsl,sec-v4.0-job-ring";

		reg	   = <0x2000 0x1000>;

	};

In the C293 device tree, we add the include of public property:

	crypto@a0000 {

		/include/ "qoriq-sec6.0.dtsi"

	}

	crypto@a0000 {

		reg = <0xa0000 0x20000>;

		ranges = <0 0xa0000 0x20000>;

		jr@1000 {

			interrupts = <49 2 0 0>;

		};

		jr@2000 {

			interrupts = <50 2 0 0>;

		};

	};

/*

 * QorIQ Sec/Crypto 6.0 device tree stub

 *

 * Copyright 2013 Freescale Semiconductor Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above copyright

 *       notice, this list of conditions and the following disclaimer in the

 *       documentation and/or other materials provided with the distribution.

 *     * Neither the name of Freescale Semiconductor nor the

 *       names of its contributors may be used to endorse or promote products

 *       derived from this software without specific prior written permission.

 *

 *

 * ALTERNATIVELY, this software may be distributed under the terms of the

 * GNU General Public License ("GPL") as published by the Free Software

 * Foundation, either version 2 of that License or (at your option) any

 * later version.

 *

 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

	compatible = "fsl,sec-v6.0";

	fsl,sec-era = <6>;

	#address-cells = <1>;

	#size-cells = <1>;

	jr@1000 {

		compatible = "fsl,sec-v6.0-job-ring",

			     "fsl,sec-v5.2-job-ring",

			     "fsl,sec-v5.0-job-ring",

			     "fsl,sec-v4.4-job-ring",

			     "fsl,sec-v4.0-job-ring";

		reg	   = <0x1000 0x1000>;

	};

	jr@2000 {

		compatible = "fsl,sec-v6.0-job-ring",

			     "fsl,sec-v5.2-job-ring",

			     "fsl,sec-v5.0-job-ring",

			     "fsl,sec-v4.4-job-ring",

			     "fsl,sec-v4.0-job-ring";

		reg	   = <0x2000 0x1000>;

	};