[PATCH 1/2] dt-bindings: regulator: Add bindings for Richtek RT5190A PMIC

[cy_huang]

From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>

Add bindings for Richtek RT5190A PMIC.

Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
---
 .../regulator/richtek,rt5190a-regulator.yaml       | 138 +++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
new file mode 100644
index 00000000..b9f5836
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
@@ -0,0 +1,138 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5190A PMIC Regulator
+
+maintainers:
+  - ChiYuan Huang <cy_huang@xxxxxxxxxxx>
+
+description: |
+  The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
+  synchronous buck converters, 1 LDO, I2C control interface and peripherial
+  logical control.
+
+  It also supports mute AC OFF depop sound and quick setting storage while
+  input power is removed.
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt5190a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vin2-supply:
+    description: phandle to buck2 input voltage.
+
+  vin3-supply:
+    description: phandle to buck3 input voltage.
+
+  vin4-supply:
+    description: phandle to buck4 input voltage.
+
+  vinldo-supply:
+    description: phandle to ldo input voltage
+
+  richtek,buck1-fixed-microvolt:
+    description: buck1 fixed voltage that depends on the external resistor.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+  richtek,buck4-fixed-microvolt:
+    description: buck4 fixed voltage that depends on the external resistor.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+  richtek,ldo-fixed-microvolt:
+    description: ldo fixed voltage that depends on the external resistor.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+
+  richtek,mute-enable:
+    description: this can be used to enable mute function.
+    type: boolean
+
+  regulators:
+    type: object
+
+    patternProperties:
+      "^buck[1-4]$|^ldo$":
+        type: object
+        $ref: regulator.yaml#
+        description: |
+          regulator description for buck[1-4] and ldo.
+
+        properties:
+          richtek,latchup-enable:
+            type: boolean
+            description: |
+              If specified, undervolt protection mode changes from the default
+              hiccup to latchup.
+
+        unevaluatedProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - richtek,buck1-fixed-microvolt
+  - richtek,buck4-fixed-microvolt
+  - richtek,ldo-fixed-microvolt
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      rt5190a@64 {
+        compatible = "richtek,rt5190a";
+        reg = <0x64>;
+        interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
+        vin2-supply = <&rt5190_buck1>;
+        vin3-supply = <&rt5190_buck1>;
+        vin4-supply = <&rt5190_buck1>;
+        richtek,buck1-fixed-microvolt = <5090000>;
+        richtek,buck4-fixed-microvolt = <850000>;
+        richtek,ldo-fixed-microvolt = <1200000>;
+
+        regulators {
+          rt5190_buck1: buck1 {
+            regulator-name = "rt5190a-buck1";
+            regulator-allowed-modes = <0 1>;
+            regulator-boot-on;
+          };
+          buck2 {
+            regulator-name = "rt5190a-buck2";
+            regulator-min-microvolt = <600000>;
+            regulator-max-microvolt = <1400000>;
+            regulator-boot-on;
+          };
+          buck3 {
+            regulator-name = "rt5190a-buck3";
+            regulator-min-microvolt = <600000>;
+            regulator-max-microvolt = <1400000>;
+            regulator-boot-on;
+          };
+          buck4 {
+            regulator-name = "rt5190a-buck4";
+            regulator-allowed-modes = <0 1>;
+            regulator-boot-on;
+          };
+          ldo {
+            regulator-name = "rt5190a-ldo";
+            regulator-boot-on;
+          };
+        };
+      };
+    };
-- 
2.7.4