[PATCH v4 2/4] dt-bindings: regulator: add document bindings for mpq7920

[Saravanan Sekar <sravanhome@gmail.com>]

Add device tree binding information for mpq7920 regulator driver.
Example bindings for mpq7920 are added.

Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
---
 .../bindings/regulator/mpq7920.yaml           | 143 ++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/mpq7920.yaml

diff --git a/Documentation/devicetree/bindings/regulator/mpq7920.yaml b/Documentation/devicetree/bindings/regulator/mpq7920.yaml
new file mode 100644
index 000000000000..54e9177dfd1b
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mpq7920.yaml
@@ -0,0 +1,143 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/mpq7920.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Monolithic Power System MPQ7920 PMIC
+
+maintainers:
+  - Saravanan Sekar <sravanhome@gmail.com>
+
+properties:
+  $nodename:
+    pattern: "pmic@[0-9a-f]{1,2}"
+  compatible:
+    enum:
+      - mps,mpq7920
+
+  reg:
+    maxItems: 1
+
+  mps,time-slot:
+    description:
+      each regulator output shall be delayed during power on/off sequence which
+      based on configurable time slot value, must be one of following corresponding
+      value 0.5ms, 2ms, 8ms, 16ms
+    allOf:
+      - $ref: "/schemas/types.yaml#/definitions/uint8"
+      - enum: [ 0, 1, 2, 3 ]
+      - default: 0
+
+  mps,fixed-on-time:
+     description:
+       select power on sequence with fixed time output delay mentioned in
+       time-slot reg for all the regulators.
+     type: boolean
+
+  mps,fixed-off-time:
+     description:
+        select power off sequence with fixed time output delay mentioned in
+        time-slot reg for all the regulators.
+     type: boolean
+
+  mps,inc-off-time:
+     description: |
+        mutually exclusive to mps,fixed-off-time an array of 8, linearly increase
+        output delay during power off sequence based on factor of time slot/interval
+        for each regulator.
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       - minimum: 0
+       - maximum: 15
+       - default: [ 0, 6, 0, 6, 7, 7, 7, 9 ]
+
+  mps,inc-on-time:
+     description: |
+        mutually exclusive to mps,fixed-on-time an array of 8, linearly increase
+        output delay during power on sequence based on factor of time slot/interval
+        for each regulator.
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       - minimum: 0
+       - maximum: 15
+       - default: [ 0, 6, 0, 6, 7, 7, 7, 9 ]
+
+  mps,switch-freq:
+     description: |
+        switching frequency must be one of following corresponding value
+        1.1MHz, 1.65MHz, 2.2MHz, 2.75MHz
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8"
+       - enum: [ 0, 1, 2, 3 ]
+       - default: 2
+
+  mps,buck-softstart:
+     description: |
+        An array of 4 contains soft start time of each buck, must be one of
+        following corresponding values 150us, 300us, 610us, 920us
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       - enum: [ 0, 1, 2, 3 ]
+       - default: [ 1, 1, 1, 1 ]
+
+  mps,buck-ovp:
+     description: |
+        An array of 4 contains over voltage protection of each buck, must be
+        one of above values
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       - enum: [ 0, 1 ]
+       - default: [ 1, 1, 1, 1 ]
+
+  mps,buck-phase-delay:
+     description: |
+        An array of 4 contains phase delay of each buck must be one of above values
+        corresponding to 0deg, 90deg, 180deg, 270deg
+     allOf:
+       - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       - enum: [ 0, 1, 2, 3 ]
+       - default: [ 0, 0, 1, 1 ]
+
+  regulators:
+    type: object
+    description:
+      list of regulators provided by this controller, must be named
+      after their hardware counterparts BUCK[1-4], one LDORTC, and LDO[2-5]
+      The valid names for regulators are
+      buck1, buck2, buck3, buck4, ldortc, ldo2, ldo3, ldo4, ldo5
+
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@69 {
+          compatible = "mps,mpq7920";
+          reg = <0x69>;
+
+          mps,switch-freq = <1>;
+          mps,buck-softstart = /bits/ 8 <1 2 1 3>;
+          mps,buck-ovp = /bits/ 8 <1 0 1 1>;
+
+          regulators {
+            buck1 {
+             regulator-name = "buck1";
+             regulator-min-microvolt = <400000>;
+             regulator-max-microvolt = <3587500>;
+             regulator-min-microamp  = <460000>;
+             regulator-max-microamp  = <7600000>;
+             regulator-boot-on;
+            };
+
+            ldo2 {
+             regulator-name = "ldo2";
+             regulator-min-microvolt = <650000>;
+             regulator-max-microvolt = <3587500>;
+            };
+         };
+       };
+     };
+...
-- 
2.17.1