[PATCH 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           | 149 ++++++++++++++++++
 1 file changed, 149 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..79000b745cfd
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mpq7920.yaml
@@ -0,0 +1,149 @@
+# 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: "mpq@[0-9a-f]{1,2}"
+  compatible:
+    enum:
+	- mps,mpq7920
+
+  reg:
+    maxItems: 1
+
+  regulators:
+    type: string
+    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
+
+    properties:
+       mps,time-slot:
+         - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+         power on/off sequence time slot/interval must be one of following values
+         With:
+          * 0: 0.5ms
+          * 1: 2ms
+          * 2: 8ms
+          * 3: 16ms
+          Defaults to 0.5ms if not specified.
+
+    properties:
+       mps,fixed-on-time:
+          - $ref: "/schemas/types.yaml#/definitions/boolean"
+       description: |
+           select power on sequence with fixed time interval mentioned in
+           time-slot reg for all the regulators.
+
+    properties:
+       mps,fixed-off-time:
+          - $ref: "/schemas/types.yaml#/definitions/boolean"
+       description: |
+          select power off sequence with fixed time interval mentioned in
+          time-slot reg for all the regulators.
+
+    properties:
+       mps,inc-off-time:
+          - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+          An array of 8, linearly increase power off sequence time
+          slot/interval for each regulator must be one of following values
+         * 0 to 15
+    properties:
+       mps,inc-on-time:
+          - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+          An array of 8, linearly increase power on sequence time
+          slot/interval for each regulator must be one of following values
+          * 0 to 15
+
+    properties:
+       mps,switch-freq:
+          - $ref: "/schemas/types.yaml#/definitions/uint8"
+       description: |
+          switching frequency must be one of following values
+          * 0 : 1.1MHz
+          * 1 : 1.65MHz
+          * 2 : 2.2MHz
+          * 3 : 2.75MHz
+          Defaults to 2.2 MHz if not specified.
+
+    properties:
+       mps,buck-softstart:
+          - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+          An array of 4 contains soft start time of each buck, must be one of
+          following values
+          * 0 : 150us
+          * 1 : 300us
+          * 2 : 610us
+          * 3 : 920us
+          Defaults to 300us if not specified.
+
+    properties:
+       mps,buck-ovp:
+          - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+           An array of 4 contains over voltage protection of each buck, must be
+           one of following values
+           * 0 : disabled
+           * 1 : enabled
+           Defaults is enabled if not specified.
+
+    properties:
+        mps,buck-phase-delay:
+          - $ref: "/schemas/types.yaml#/definitions/uint8-array"
+       description: |
+           An array of 4 contains each buck phase delay must be one of following
+           values
+           * 0: 0deg
+           * 1: 90deg
+           * 2: 180deg
+           * 3: 270deg
+           Defaults to 0deg for buck1 & buck2, 90deg for buck3 & buck4 if not
+           specified.
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        mpq7920@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