[10/10] dt-bindings: Add documentation for rt5033 mfd, regulator and charger

diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml
new file mode 100644
index 000000000000..f1a58694c81e
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+++ b/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml
@@ -0,0 +1,102 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/richtek,rt5033.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5033 Power Management Integrated Circuit
+
+maintainers:
+  - Jakob Hauser <jahau@rocketmail.com>
+
+description: |
+  RT5033 is a multifunction device which includes battery charger, fuel gauge,
+  flash LED current source, LDO and synchronous Buck converter for portable
+  applications. It is interfaced to host controller using I2C interface. The
+  battery fuel gauge uses a separate I2C bus.
+
+properties:
+  compatible:
+    const: richtek,rt5033
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  regulators:
+    type: object
+    $ref: /schemas/regulator/richtek,rt5033-regulator.yaml#
+
+  charger:
+    type: object
+    $ref: /schemas/power/supply/richtek,rt5033-charger.yaml#
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c@0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@34 {
+            compatible = "richtek,rt5033";
+            reg = <0x34>;
+
+            interrupt-parent = <&msmgpio>;
+            interrupts = <62 IRQ_TYPE_EDGE_FALLING>;
+
+            pinctrl-names = "default";
+            pinctrl-0 = <&pmic_int_default>;
+
+            regulators {
+                safe_ldo_reg: SAFE_LDO {
+                    regulator-name = "SAFE_LDO";
+                    regulator-min-microvolt = <4900000>;
+                    regulator-max-microvolt = <4900000>;
+                    regulator-always-on;
+                };
+                ldo_reg: LDO {
+                    regulator-name = "LDO";
+                    regulator-min-microvolt = <2800000>;
+                    regulator-max-microvolt = <2800000>;
+                };
+                buck_reg: BUCK {
+                    regulator-name = "BUCK";
+                    regulator-min-microvolt = <1200000>;
+                    regulator-max-microvolt = <1200000>;
+                };
+            };
+
+            charger {
+                compatible = "richtek,rt5033-charger";
+                richtek,pre-uamp = <450000>;
+                richtek,fast-uamp = <1000000>;
+                richtek,eoc-uamp = <150000>;
+                richtek,pre-threshold-uvolt = <3500000>;
+                richtek,const-uvolt = <4350000>;
+                extcon = <&muic>;
+            };
+        };
+    };
+
+    i2c@1 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        battery@35 {
+            compatible = "richtek,rt5033-battery";
+            reg = <0x35>;
+            interrupt-parent = <&msmgpio>;
+            interrupts = <121 IRQ_TYPE_EDGE_FALLING>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml
new file mode 100644
index 000000000000..996c2932927d
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+++ b/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml
@@ -0,0 +1,76 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/richtek,rt5033-charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5033 PIMC Battery Charger
+
+maintainers:
+  - Jakob Hauser <jahau@rocketmail.com>
+
+description: |
+  The battery charger of the multifunction device RT5033 has to be instantiated
+  under sub-node named "charger" using the following format.
+
+properties:
+  compatible:
+    const: richtek,rt5033-charger
+
+  richtek,pre-uamp:
+    description: |
+      Current of pre-charge mode. The pre-charge current levels are 350 mA to
+      650 mA programmed by I2C per 100 mA.
+    maxItems: 1
+
+  richtek,fast-uamp:
+    description: |
+      Current of fast-charge mode. The fast-charge current levels are 700 mA
+      to 2000 mA programmed by I2C per 100 mA.
+    maxItems: 1
+
+  richtek,eoc-uamp:
+    description: |
+      This property is end of charge current. Its level ranges from 150 mA to
+      600 mA. Between 150 mA and 300 mA in 50 mA steps, between 300 mA and 600 mA
+      in 100 mA steps.
+    maxItems: 1
+
+  richtek,pre-threshold-uvolt:
+    description: |
+      Voltage of pre-charge mode. If the battery voltage is below the pre-charge
+      threshold voltage, the charger is in pre-charge mode with pre-charge current.
+      Its levels are 2.3 V to 3.8 V programmed by I2C per 0.1 V.
+    maxItems: 1
+
+  richtek,const-uvolt:
+    description: |
+      Battery regulation voltage of constant voltage mode. This voltage levels from
+      3.65 V to 4.4 V by I2C per 0.025 V.
+    maxItems: 1
+
+  extcon:
+    description: |
+      Phandle to the extcon device.
+    maxItems: 1
+
+required:
+  - richtek,pre-uamp
+  - richtek,fast-uamp
+  - richtek,eoc-uamp
+  - richtek,pre-threshold-uvolt
+  - richtek,const-uvolt
+
+additionalProperties: false
+
+examples:
+  - |
+    charger {
+        compatible = "richtek,rt5033-charger";
+        richtek,pre-uamp = <450000>;
+        richtek,fast-uamp = <1000000>;
+        richtek,eoc-uamp = <150000>;
+        richtek,pre-threshold-uvolt = <3500000>;
+        richtek,const-uvolt = <4350000>;
+        extcon = <&muic>;
+    };
diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5033-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5033-regulator.yaml
new file mode 100644
index 000000000000..61b074488db4
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rt5033-regulator.yaml
@@ -0,0 +1,45 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rt5033-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5033 PIMC Voltage Regulator
+
+maintainers:
+  - Jakob Hauser <jahau@rocketmail.com>
+
+description: |
+  The regulators of RT5033 have to be instantiated under a sub-node named
+  "regulators". For SAFE_LDO voltage there is only one value of 4.9 V. LDO
+  voltage ranges from 1.2 V to 3.0 V in 0.1 V steps. BUCK voltage ranges from
+  1.0 V to 3.0 V in 0.1 V steps.
+
+patternProperties:
+  "^(SAFE_LDO|LDO|BUCK)$":
+    type: object
+    $ref: /schemas/regulator/regulator.yaml#
+    unevaluatedProperties: false
+
+additionalProperties: false
+
+examples:
+  - |
+    regulators {
+        safe_ldo_reg: SAFE_LDO {
+            regulator-name = "SAFE_LDO";
+            regulator-min-microvolt = <4900000>;
+            regulator-max-microvolt = <4900000>;
+            regulator-always-on;
+        };
+        ldo_reg: LDO {
+            regulator-name = "LDO";
+            regulator-min-microvolt = <2800000>;
+            regulator-max-microvolt = <2800000>;
+        };
+        buck_reg: BUCK {
+            regulator-name = "BUCK";
+            regulator-min-microvolt = <1200000>;
+            regulator-max-microvolt = <1200000>;
+        };
+     };