[PATCH] dt-bindings: crypto: fsl,sec-v4.0: Convert to DT schema

* [PATCH] dt-bindings: crypto: fsl,sec-v4.0: Convert to DT schema
@ 2023-02-20 21:33 Rob Herring
  2023-03-04  7:28 ` Peng Fan
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Rob Herring @ 2023-02-20 21:33 UTC (permalink / raw)
  To: Herbert Xu, David S. Miller, Krzysztof Kozlowski,
	Horia Geantă,
	Pankaj Gupta, Gaurav Jain
  Cc: linux-crypto, devicetree, linux-kernel

Convert Freescale CAAM/SEC4 binding to DT schema format. The
'fsl,sec-v4.0' and 'fsl,sec-v4.0-mon' parts are independent, so split
them into separate schema files.

Add a bunch of missing compatibles for v5.0, v5.4, etc. Drop unused
'ranges', '#address-cells', and '#size-cells' from fsl,sec-v4.0-mon nodes.

There's one DTB warning for LS1012a which has a 2nd 'reg' entry for
'fsl,sec-v4.0-rtic'. Leaving that as there is no clue as to what it is for.

Signed-off-by: Rob Herring <robh@kernel.org>
---
 .../bindings/crypto/fsl,sec-v4.0-mon.yaml     | 150 +++++
 .../bindings/crypto/fsl,sec-v4.0.yaml         | 266 +++++++++
 .../devicetree/bindings/crypto/fsl-sec4.txt   | 553 ------------------
 3 files changed, 416 insertions(+), 553 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/crypto/fsl,sec-v4.0-mon.yaml
 create mode 100644 Documentation/devicetree/bindings/crypto/fsl,sec-v4.0.yaml
 delete mode 100644 Documentation/devicetree/bindings/crypto/fsl-sec4.txt

diff --git a/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0-mon.yaml b/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0-mon.yaml
new file mode 100644
index 000000000000..353d9140dcea
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0-mon.yaml
@@ -0,0 +1,150 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2008-2011 Freescale Semiconductor Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/fsl,sec-v4.0-mon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Secure Non-Volatile Storage (SNVS)
+
+maintainers:
+  - '"Horia Geantă" <horia.geanta@nxp.com>'
+  - Pankaj Gupta <pankaj.gupta@nxp.com>
+  - Gaurav Jain <gaurav.jain@nxp.com>
+
+description:
+  Node defines address range and the associated interrupt for the SNVS function.
+  This function monitors security state information & reports security
+  violations. This also included rtc, system power off and ON/OFF key.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: fsl,sec-v4.0-mon
+          - const: syscon
+          - const: simple-mfd
+      - items:
+          - const: fsl,sec-v5.0-mon
+          - const: fsl,sec-v4.0-mon
+      - items:
+          - enum:
+              - fsl,sec-v5.3-mon
+              - fsl,sec-v5.4-mon
+          - const: fsl,sec-v5.0-mon
+          - const: fsl,sec-v4.0-mon
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 2
+
+  snvs-rtc-lp:
+    type: object
+    additionalProperties: false
+    description:
+      Secure Non-Volatile Storage (SNVS) Low Power (LP) RTC Node
+
+    properties:
+      compatible:
+        const: fsl,sec-v4.0-mon-rtc-lp
+
+      clocks:
+        maxItems: 1
+
+      clock-names:
+        const: snvs-rtc
+
+      interrupts:
+        # VFxxx has only one. What is the 2nd one?
+        minItems: 1
+        maxItems: 2
+
+      regmap:
+        description: Parent node containing registers
+        $ref: /schemas/types.yaml#/definitions/phandle
+
+      offset:
+        description: LP register offset
+        $ref: /schemas/types.yaml#/definitions/uint32
+        default: 0x34
+
+    required:
+      - compatible
+      - interrupts
+      - regmap
+
+  snvs-powerkey:
+    type: object
+    additionalProperties: false
+    description:
+      The snvs-pwrkey is designed to enable POWER key function which controlled
+      by SNVS ONOFF, the driver can report the status of POWER key and wakeup
+      system if pressed after system suspend.
+
+    properties:
+      compatible:
+        const: fsl,sec-v4.0-pwrkey
+
+      clocks:
+        maxItems: 1
+
+      clock-names:
+        const: snvs-pwrkey
+
+      interrupts:
+        maxItems: 1
+
+      regmap:
+        description: Parent node containing registers
+        $ref: /schemas/types.yaml#/definitions/phandle
+
+      wakeup-source: true
+
+      linux,keycode:
+        default: 116
+
+    required:
+      - compatible
+      - interrupts
+      - regmap
+
+  snvs-lpgpr:
+    $ref: /schemas/nvmem/snvs-lpgpr.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx7d-clock.h>
+
+    sec_mon: sec-mon@314000 {
+        compatible = "fsl,sec-v4.0-mon", "syscon", "simple-mfd";
+        reg = <0x314000 0x1000>;
+
+        snvs-rtc-lp {
+            compatible = "fsl,sec-v4.0-mon-rtc-lp";
+            regmap = <&sec_mon>;
+            offset = <0x34>;
+            clocks = <&clks IMX7D_SNVS_CLK>;
+            clock-names = "snvs-rtc";
+            interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+        };
+
+        snvs-powerkey {
+            compatible = "fsl,sec-v4.0-pwrkey";
+            regmap = <&sec_mon>;
+            clocks = <&clks IMX7D_SNVS_CLK>;
+            clock-names = "snvs-pwrkey";
+            interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+            linux,keycode = <116>; /* KEY_POWER */
+            wakeup-source;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0.yaml b/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0.yaml
new file mode 100644
index 000000000000..0a9ed2848b7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/fsl,sec-v4.0.yaml
@@ -0,0 +1,266 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2008-2011 Freescale Semiconductor Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/crypto/fsl,sec-v4.0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale SEC 4
+
+maintainers:
+  - '"Horia Geantă" <horia.geanta@nxp.com>'
+  - Pankaj Gupta <pankaj.gupta@nxp.com>
+  - Gaurav Jain <gaurav.jain@nxp.com>
+
+description: |
+  NOTE: the SEC 4 is also known as Freescale's Cryptographic Accelerator
+  Accelerator and Assurance Module (CAAM).
+
+  SEC 4 h/w can process requests from 2 types of sources.
+  1. DPAA Queue Interface (HW interface between Queue Manager & SEC 4).
+  2. Job Rings (HW interface between cores & SEC 4 registers).
+
+  High Speed Data Path Configuration:
+
+  HW interface between QM & SEC 4 and also BM & SEC 4, on DPAA-enabled parts
+  such as the P4080.  The number of simultaneous dequeues the QI can make is
+  equal to the number of Descriptor Controller (DECO) engines in a particular
+  SEC version.  E.g., the SEC 4.0 in the P4080 has 5 DECOs and can thus
+  dequeue from 5 subportals simultaneously.
+
+  Job Ring Data Path Configuration:
+
+  Each JR is located on a separate 4k page, they may (or may not) be made visible
+  in the memory partition devoted to a particular core.  The P4080 has 4 JRs, so
+  up to 4 JRs can be configured; and all 4 JRs process requests in parallel.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: fsl,sec-v5.4
+          - const: fsl,sec-v5.0
+          - const: fsl,sec-v4.0
+      - items:
+          - enum:
+              - fsl,imx6ul-caam
+              - fsl,sec-v5.0
+          - const: fsl,sec-v4.0
+      - const: fsl,sec-v4.0
+
+  reg:
+    maxItems: 1
+
+  ranges:
+    maxItems: 1
+
+  '#address-cells':
+    enum: [1, 2]
+
+  '#size-cells':
+    enum: [1, 2]
+
+  clocks:
+    minItems: 1
+    maxItems: 4
+
+  clock-names:
+    minItems: 1
+    maxItems: 4
+    items:
+      enum: [mem, aclk, ipg, emi_slow]
+
+  dma-coherent: true
+
+  interrupts:
+    maxItems: 1
+
+  fsl,sec-era:
+    description: Defines the 'ERA' of the SEC device.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+patternProperties:
+  '^jr@[0-9a-f]+$':
+    type: object
+    additionalProperties: false
+    description:
+      Job Ring (JR) Node. Defines data processing interface to SEC 4 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.
+
+    properties:
+      compatible:
+        oneOf:
+          - items:
+              - const: fsl,sec-v5.4-job-ring
+              - const: fsl,sec-v5.0-job-ring
+              - const: fsl,sec-v4.0-job-ring
+          - items:
+              - const: fsl,sec-v5.0-job-ring
+              - const: fsl,sec-v4.0-job-ring
+          - const: fsl,sec-v4.0-job-ring
+
+      reg:
+        maxItems: 1
+
+      interrupts:
+        maxItems: 1
+
+      fsl,liodn:
+        description:
+          Specifies the LIODN to be used in conjunction with the ppid-to-liodn
+          table that specifies the PPID to LIODN mapping. Needed if the PAMU is
+          used.  Value is a 12 bit value where value is a LIODN ID for this JR.
+          This property is normally set by boot firmware.
+        $ref: /schemas/types.yaml#/definitions/uint32
+        maximum: 0xfff
+
+  '^rtic@[0-9a-f]+$':
+    type: object
+    additionalProperties: false
+    description:
+      Run Time Integrity Check (RTIC) Node. Defines a register space that
+      contains up to 5 sets of addresses and their lengths (sizes) that will be
+      checked at run time.  After an initial hash result is calculated, these
+      addresses are checked by HW to monitor any change.  If any memory is
+      modified, a Security Violation is triggered (see SNVS definition).
+
+    properties:
+      compatible:
+        oneOf:
+          - items:
+              - const: fsl,sec-v5.4-rtic
+              - const: fsl,sec-v5.0-rtic
+              - const: fsl,sec-v4.0-rtic
+          - const: fsl,sec-v4.0-rtic
+
+      reg:
+        maxItems: 1
+
+      ranges:
+        maxItems: 1
+
+      interrupts:
+        maxItems: 1
+
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 1
+
+    patternProperties:
+      '^rtic-[a-z]@[0-9a-f]+$':
+        type: object
+        additionalProperties: false
+        description:
+          Run Time Integrity Check (RTIC) Memory Node defines individual RTIC
+          memory regions that are used to perform run-time integrity check of
+          memory areas that should not modified. The node defines a register
+          that contains the memory address & length (combined) and a second
+          register that contains the hash result in big endian format.
+
+        properties:
+          compatible:
+            oneOf:
+              - items:
+                  - const: fsl,sec-v5.4-rtic-memory
+                  - const: fsl,sec-v5.0-rtic-memory
+                  - const: fsl,sec-v4.0-rtic-memory
+              - const: fsl,sec-v4.0-rtic-memory
+
+          reg:
+            items:
+              - description: RTIC memory address
+              - description: RTIC hash result
+
+          fsl,liodn:
+            description:
+              Specifies the LIODN to be used in conjunction with the
+              ppid-to-liodn table that specifies the PPID to LIODN mapping.
+              Needed if the PAMU is used.  Value is a 12 bit value where value
+              is a LIODN ID for this JR. This property is normally set by boot
+              firmware.
+            $ref: /schemas/types.yaml#/definitions/uint32
+            maximum: 0xfff
+
+          fsl,rtic-region:
+            description:
+              Specifies the HW address (36 bit address) for this region
+              followed by the length of the HW partition to be checked;
+              the address is represented as a 64 bit quantity followed
+              by a 32 bit length.
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+
+required:
+  - compatible
+  - reg
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    crypto@300000 {
+        compatible = "fsl,sec-v4.0";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        reg = <0x300000 0x10000>;
+        ranges = <0 0x300000 0x10000>;
+        interrupts = <92 2>;
+
+        jr@1000 {
+            compatible = "fsl,sec-v4.0-job-ring";
+            reg = <0x1000 0x1000>;
+            interrupts = <88 2>;
+        };
+
+        jr@2000 {
+            compatible = "fsl,sec-v4.0-job-ring";
+            reg = <0x2000 0x1000>;
+            interrupts = <89 2>;
+        };
+
+        jr@3000 {
+            compatible = "fsl,sec-v4.0-job-ring";
+            reg = <0x3000 0x1000>;
+            interrupts = <90 2>;
+        };
+
+        jr@4000 {
+            compatible = "fsl,sec-v4.0-job-ring";
+            reg = <0x4000 0x1000>;
+            interrupts = <91 2>;
+        };
+
+        rtic@6000 {
+            compatible = "fsl,sec-v4.0-rtic";
+            #address-cells = <1>;
+            #size-cells = <1>;
+            reg = <0x6000 0x100>;
+            ranges = <0x0 0x6100 0xe00>;
+
+            rtic-a@0 {
+                compatible = "fsl,sec-v4.0-rtic-memory";
+                reg = <0x00 0x20>, <0x100 0x80>;
+            };
+
+            rtic-b@20 {
+                compatible = "fsl,sec-v4.0-rtic-memory";
+                reg = <0x20 0x20>, <0x200 0x80>;
+            };
+
+            rtic-c@40 {
+                compatible = "fsl,sec-v4.0-rtic-memory";
+                reg = <0x40 0x20>, <0x300 0x80>;
+            };
+
+            rtic-d@60 {
+                compatible = "fsl,sec-v4.0-rtic-memory";
+                reg = <0x60 0x20>, <0x500 0x80>;
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
deleted file mode 100644
index 8f359f473ada..000000000000
--- a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
+++ /dev/null
@@ -1,553 +0,0 @@
-=====================================================================
-SEC 4 Device Tree Binding
-Copyright (C) 2008-2011 Freescale Semiconductor Inc.
-
- CONTENTS
-   -Overview
-   -SEC 4 Node
-   -Job Ring Node
-   -Run Time Integrity Check (RTIC) Node
-   -Run Time Integrity Check (RTIC) Memory Node
-   -Secure Non-Volatile Storage (SNVS) Node
-   -Secure Non-Volatile Storage (SNVS) Low Power (LP) RTC Node
-   -Full Example
-
-NOTE: the SEC 4 is also known as Freescale's Cryptographic Accelerator
-Accelerator and Assurance Module (CAAM).
-
-=====================================================================
-Overview
-
-DESCRIPTION
-
-SEC 4 h/w can process requests from 2 types of sources.
-1. DPAA Queue Interface (HW interface between Queue Manager & SEC 4).
-2. Job Rings (HW interface between cores & SEC 4 registers).
-
-High Speed Data Path Configuration:
-
-HW interface between QM & SEC 4 and also BM & SEC 4, on DPAA-enabled parts
-such as the P4080.  The number of simultaneous dequeues the QI can make is
-equal to the number of Descriptor Controller (DECO) engines in a particular
-SEC version.  E.g., the SEC 4.0 in the P4080 has 5 DECOs and can thus
-dequeue from 5 subportals simultaneously.
-
-Job Ring Data Path Configuration:
-
-Each JR is located on a separate 4k page, they may (or may not) be made visible
-in the memory partition devoted to a particular core.  The P4080 has 4 JRs, so
-up to 4 JRs can be configured; and all 4 JRs process requests in parallel.
-
-=====================================================================
-SEC 4 Node
-
-Description
-
-    Node defines the base address of the SEC 4 block.
-    This block specifies the address range of all global
-    configuration registers for the SEC 4 block.  It
-    also receives interrupts from the Run Time Integrity Check
-    (RTIC) function within the SEC 4 block.
-
-PROPERTIES
-
-   - compatible
-      Usage: required
-      Value type: <string>
-      Definition: Must include "fsl,sec-v4.0"
-
-   - 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 SEC4 configuration registers.
-          registers
-
-   - ranges
-       Usage: required
-       Value type: <prop-encoded-array>
-       Definition: A standard property.  Specifies the physical address
-           range of the SEC 4.0 register space (-SNVS not included).  A
-           triplet that includes the child address, parent address, &
-           length.
-
-   - 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.
-
-   - clocks
-      Usage: required if SEC 4.0 requires explicit enablement of clocks
-      Value type: <prop_encoded-array>
-      Definition:  A list of phandle and clock specifier pairs describing
-          the clocks required for enabling and disabling SEC 4.0.
-
-   - clock-names
-      Usage: required if SEC 4.0 requires explicit enablement of clocks
-      Value type: <string>
-      Definition: A list of clock name strings in the same order as the
-          clocks property.
-
-   Note: All other standard properties (see the Devicetree Specification)
-   are allowed but are optional.
-
-
-EXAMPLE
-
-iMX6QDL/SX requires four clocks
-
-	crypto@300000 {
-		compatible = "fsl,sec-v4.0";
-		fsl,sec-era = <2>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-		reg = <0x300000 0x10000>;
-		ranges = <0 0x300000 0x10000>;
-		interrupt-parent = <&mpic>;
-		interrupts = <92 2>;
-		clocks = <&clks IMX6QDL_CLK_CAAM_MEM>,
-			 <&clks IMX6QDL_CLK_CAAM_ACLK>,
-			 <&clks IMX6QDL_CLK_CAAM_IPG>,
-			 <&clks IMX6QDL_CLK_EIM_SLOW>;
-		clock-names = "mem", "aclk", "ipg", "emi_slow";
-	};
-
-
-iMX6UL does only require three clocks
-
-	crypto: crypto@2140000 {
-		compatible = "fsl,sec-v4.0";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		reg = <0x2140000 0x3c000>;
-		ranges = <0 0x2140000 0x3c000>;
-		interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
-
-		clocks = <&clks IMX6UL_CLK_CAAM_MEM>,
-			 <&clks IMX6UL_CLK_CAAM_ACLK>,
-			 <&clks IMX6UL_CLK_CAAM_IPG>;
-		clock-names = "mem", "aclk", "ipg";
-	};
-
-=====================================================================
-Job Ring (JR) Node
-
-    Child of the crypto node defines data processing interface to SEC 4
-    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-v4.0-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.
-
-   - fsl,liodn
-       Usage: optional-but-recommended
-       Value type: <prop-encoded-array>
-       Definition:
-           Specifies the LIODN to be used in conjunction with
-           the ppid-to-liodn table that specifies the PPID to LIODN mapping.
-           Needed if the PAMU is used.  Value is a 12 bit value
-           where value is a LIODN ID for this JR. This property is
-           normally set by boot firmware.
-
-   - 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-v4.0-job-ring";
-		reg = <0x1000 0x1000>;
-		fsl,liodn = <0x081>;
-		interrupt-parent = <&mpic>;
-		interrupts = <88 2>;
-	};
-
-
-=====================================================================
-Run Time Integrity Check (RTIC) Node
-
-  Child node of the crypto node.  Defines a register space that
-  contains up to 5 sets of addresses and their lengths (sizes) that
-  will be checked at run time.  After an initial hash result is
-  calculated, these addresses are checked by HW to monitor any
-  change.  If any memory is modified, a Security Violation is
-  triggered (see SNVS definition).
-
-
-  - compatible
-      Usage: required
-      Value type: <string>
-      Definition: Must include "fsl,sec-v4.0-rtic".
-
-   - #address-cells
-       Usage: required
-       Value type: <u32>
-       Definition: A standard property.  Defines the number of cells
-           for representing physical addresses in child nodes.  Must
-           have a value of 1.
-
-   - #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.  Must have a value of 1.
-
-  - reg
-      Usage: required
-      Value type: <prop-encoded-array>
-      Definition: A standard property.  Specifies a two parameters:
-          an offset from the parent physical address and the length
-          the SEC4 registers.
-
-   - ranges
-       Usage: required
-       Value type: <prop-encoded-array>
-       Definition: A standard property.  Specifies the physical address
-           range of the SEC 4 register space (-SNVS not included).  A
-           triplet that includes the child address, parent address, &
-           length.
-
-EXAMPLE
-	rtic@6000 {
-		compatible = "fsl,sec-v4.0-rtic";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		reg = <0x6000 0x100>;
-		ranges = <0x0 0x6100 0xe00>;
-	};
-
-=====================================================================
-Run Time Integrity Check (RTIC) Memory Node
-  A child node that defines individual RTIC memory regions that are used to
-  perform run-time integrity check of memory areas that should not modified.
-  The node defines a register that contains the memory address &
-  length (combined) and a second register that contains the hash result
-  in big endian format.
-
-  - compatible
-      Usage: required
-      Value type: <string>
-      Definition: Must include "fsl,sec-v4.0-rtic-memory".
-
-  - reg
-      Usage: required
-      Value type: <prop-encoded-array>
-      Definition: A standard property.  Specifies two parameters:
-          an offset from the parent physical address and the length:
-
-          1. The location of the RTIC memory address & length registers.
-          2. The location RTIC hash result.
-
-  - fsl,rtic-region
-       Usage: optional-but-recommended
-       Value type: <prop-encoded-array>
-       Definition:
-           Specifies the HW address (36 bit address) for this region
-           followed by the length of the HW partition to be checked;
-           the address is represented as a 64 bit quantity followed
-           by a 32 bit length.
-
-   - fsl,liodn
-       Usage: optional-but-recommended
-       Value type: <prop-encoded-array>
-       Definition:
-           Specifies the LIODN to be used in conjunction with
-           the ppid-to-liodn table that specifies the PPID to LIODN
-           mapping.  Needed if the PAMU is used.  Value is a 12 bit value
-           where value is a LIODN ID for this RTIC memory region. This
-           property is normally set by boot firmware.
-
-EXAMPLE
-	rtic-a@0 {
-		compatible = "fsl,sec-v4.0-rtic-memory";
-		reg = <0x00 0x20 0x100 0x80>;
-		fsl,liodn   = <0x03c>;
-		fsl,rtic-region  = <0x12345678 0x12345678 0x12345678>;
-	};
-
-=====================================================================
-Secure Non-Volatile Storage (SNVS) Node
-
-    Node defines address range and the associated
-    interrupt for the SNVS function.  This function
-    monitors security state information & reports
-    security violations. This also included rtc,
-    system power off and ON/OFF key.
-
-  - compatible
-      Usage: required
-      Value type: <string>
-      Definition: Must include "fsl,sec-v4.0-mon" and "syscon".
-
-  - reg
-      Usage: required
-      Value type: <prop-encoded-array>
-      Definition: A standard property.  Specifies the physical
-          address and length of the SEC4 configuration
-          registers.
-
-   - #address-cells
-       Usage: required
-       Value type: <u32>
-       Definition: A standard property.  Defines the number of cells
-           for representing physical addresses in child nodes.  Must
-           have a value of 1.
-
-   - #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.  Must have a value of 1.
-
-   - ranges
-       Usage: required
-       Value type: <prop-encoded-array>
-       Definition: A standard property.  Specifies the physical address
-           range of the SNVS register space.  A triplet that includes
-           the child address, parent address, & length.
-
-   - interrupts
-      Usage: optional
-      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
-	sec_mon@314000 {
-		compatible = "fsl,sec-v4.0-mon", "syscon";
-		reg = <0x314000 0x1000>;
-		ranges = <0 0x314000 0x1000>;
-		interrupt-parent = <&mpic>;
-		interrupts = <93 2>;
-	};
-
-=====================================================================
-Secure Non-Volatile Storage (SNVS) Low Power (LP) RTC Node
-
-  A SNVS child node that defines SNVS LP RTC.
-
-  - compatible
-      Usage: required
-      Value type: <string>
-      Definition: Must include "fsl,sec-v4.0-mon-rtc-lp".
-
-  - 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.
-
- - regmap
-	Usage: required
-	Value type: <phandle>
-	Definition: this is phandle to the register map node.
-
- - offset
-	Usage: option
-	value type: <u32>
-	Definition: LP register offset. default it is 0x34.
-
-   - clocks
-      Usage: optional, required if SNVS LP RTC requires explicit
-          enablement of clocks
-      Value type: <prop_encoded-array>
-      Definition:  a clock specifier describing the clock required for
-          enabling and disabling SNVS LP RTC.
-
-   - clock-names
-      Usage: optional, required if SNVS LP RTC requires explicit
-          enablement of clocks
-      Value type: <string>
-      Definition: clock name string should be "snvs-rtc".
-
-EXAMPLE
-	sec_mon_rtc_lp@1 {
-		compatible = "fsl,sec-v4.0-mon-rtc-lp";
-		interrupts = <93 2>;
-		regmap = <&snvs>;
-		offset = <0x34>;
-		clocks = <&clks IMX7D_SNVS_CLK>;
-		clock-names = "snvs-rtc";
-	};
-
-=====================================================================
-System ON/OFF key driver
-
-  The snvs-pwrkey is designed to enable POWER key function which controlled
-  by SNVS ONOFF, the driver can report the status of POWER key and wakeup
-  system if pressed after system suspend.
-
-  - compatible:
-      Usage: required
-      Value type: <string>
-      Definition: Mush include "fsl,sec-v4.0-pwrkey".
-
-  - interrupts:
-      Usage: required
-      Value type: <prop_encoded-array>
-      Definition: The SNVS ON/OFF interrupt number to the CPU(s).
-
-  - linux,keycode:
-      Usage: option
-      Value type: <int>
-      Definition: Keycode to emit, KEY_POWER by default.
-
-  - wakeup-source:
-      Usage: option
-      Value type: <boo>
-      Definition: Button can wake-up the system.
-
- - regmap:
-      Usage: required:
-      Value type: <phandle>
-      Definition: this is phandle to the register map node.
-
-EXAMPLE:
-	snvs-pwrkey@020cc000 {
-		compatible = "fsl,sec-v4.0-pwrkey";
-		regmap = <&snvs>;
-		interrupts = <0 4 0x4>
-	        linux,keycode = <116>; /* KEY_POWER */
-		wakeup-source;
-	};
-
-=====================================================================
-FULL EXAMPLE
-
-	crypto: crypto@300000 {
-		compatible = "fsl,sec-v4.0";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		reg = <0x300000 0x10000>;
-		ranges = <0 0x300000 0x10000>;
-		interrupt-parent = <&mpic>;
-		interrupts = <92 2>;
-
-		sec_jr0: jr@1000 {
-			compatible = "fsl,sec-v4.0-job-ring";
-			reg = <0x1000 0x1000>;
-			interrupt-parent = <&mpic>;
-			interrupts = <88 2>;
-		};
-
-		sec_jr1: jr@2000 {
-			compatible = "fsl,sec-v4.0-job-ring";
-			reg = <0x2000 0x1000>;
-			interrupt-parent = <&mpic>;
-			interrupts = <89 2>;
-		};
-
-		sec_jr2: jr@3000 {
-			compatible = "fsl,sec-v4.0-job-ring";
-			reg = <0x3000 0x1000>;
-			interrupt-parent = <&mpic>;
-			interrupts = <90 2>;
-		};
-
-		sec_jr3: jr@4000 {
-			compatible = "fsl,sec-v4.0-job-ring";
-			reg = <0x4000 0x1000>;
-			interrupt-parent = <&mpic>;
-			interrupts = <91 2>;
-		};
-
-		rtic@6000 {
-			compatible = "fsl,sec-v4.0-rtic";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			reg = <0x6000 0x100>;
-			ranges = <0x0 0x6100 0xe00>;
-
-			rtic_a: rtic-a@0 {
-				compatible = "fsl,sec-v4.0-rtic-memory";
-				reg = <0x00 0x20 0x100 0x80>;
-			};
-
-			rtic_b: rtic-b@20 {
-				compatible = "fsl,sec-v4.0-rtic-memory";
-				reg = <0x20 0x20 0x200 0x80>;
-			};
-
-			rtic_c: rtic-c@40 {
-				compatible = "fsl,sec-v4.0-rtic-memory";
-				reg = <0x40 0x20 0x300 0x80>;
-			};
-
-			rtic_d: rtic-d@60 {
-				compatible = "fsl,sec-v4.0-rtic-memory";
-				reg = <0x60 0x20 0x500 0x80>;
-			};
-		};
-	};
-
-	sec_mon: sec_mon@314000 {
-		compatible = "fsl,sec-v4.0-mon";
-		reg = <0x314000 0x1000>;
-		ranges = <0 0x314000 0x1000>;
-
-		sec_mon_rtc_lp@34 {
-			compatible = "fsl,sec-v4.0-mon-rtc-lp";
-			regmap = <&sec_mon>;
-			offset = <0x34>;
-			interrupts = <93 2>;
-			clocks = <&clks IMX7D_SNVS_CLK>;
-			clock-names = "snvs-rtc";
-		};
-
-		snvs-pwrkey@020cc000 {
-			compatible = "fsl,sec-v4.0-pwrkey";
-			regmap = <&sec_mon>;
-			interrupts = <0 4 0x4>;
-			linux,keycode = <116>; /* KEY_POWER */
-			wakeup-source;
-		};
-	};
-
-=====================================================================
-- 
2.39.1


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