dt-bindings: mfd: lp87565: Convert to yaml

Also apply a few smaller improvements:

 - document that the only possible I2C slave address is 0x60 as per the
   datasheet and fix the second example accordingly
 - The definition of "xxx-in-supply" was generic, thus define in detail the
   possible cases for each chip variant
 - remove "MFD driver" from the title as it is implementation specific
 - replace "PMIC" with "buck converter" in title as it is more informative
Signed-off-by: NLuca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Documentation/devicetree/bindings/mfd/lp87565.txt

-TI LP87565 PMIC MFD driver
-
-Required properties:
-  - compatible:	"ti,lp87565", "ti,lp87565-q1"
-  - reg:		I2C slave address.
-  - gpio-controller:	Marks the device node as a GPIO Controller.
-  - #gpio-cells:	Should be two.  The first cell is the pin number and
-			the second cell is used to specify flags.
-			See ../gpio/gpio.txt for more information.
-  - xxx-in-supply:	Phandle to parent supply node of each regulator
-			populated under regulators node. xxx should match
-			the supply_name populated in driver.
-Example:
-
-lp87565_pmic: pmic@60 {
-	compatible = "ti,lp87565-q1";
-	reg = <0x60>;
-	gpio-controller;
-	#gpio-cells = <2>;
-
-	buck10-in-supply = <&vsys_3v3>;
-	buck23-in-supply = <&vsys_3v3>;
-
-	regulators: regulators {
-		buck10_reg: buck10 {
-			/* VDD_MPU */
-			regulator-name = "buck10";
-			regulator-min-microvolt = <850000>;
-			regulator-max-microvolt = <1250000>;
-			regulator-always-on;
-			regulator-boot-on;
-		};
-
-		buck23_reg: buck23 {
-			/* VDD_GPU */
-			regulator-name = "buck23";
-			regulator-min-microvolt = <850000>;
-			regulator-max-microvolt = <1250000>;
-			regulator-boot-on;
-			regulator-always-on;
-		};
-	};
-};
-
-TI LP87561 PMIC:
-
-This is a single output 4-phase regulator configuration
-
-Required properties:
-  - compatible:	"ti,lp87561-q1"
-  - reg:		I2C slave address.
-  - gpio-controller:	Marks the device node as a GPIO Controller.
-  - #gpio-cells:	Should be two.  The first cell is the pin number and
-			the second cell is used to specify flags.
-			See ../gpio/gpio.txt for more information.
-  - xxx-in-supply:	Phandle to parent supply node of each regulator
-			populated under regulators node. xxx should match
-			the supply_name populated in driver.
-Example:
-
-lp87561_pmic: pmic@62 {
-	compatible = "ti,lp87561-q1";
-	reg = <0x62>;
-	gpio-controller;
-	#gpio-cells = <2>;
-
-	buck3210-in-supply = <&vsys_3v3>;
-
-	regulators: regulators {
-		buck3210_reg: buck3210 {
-			/* VDD_CORE */
-			regulator-name = "buck3210";
-			regulator-min-microvolt = <800000>;
-			regulator-max-microvolt = <800000>;
-			regulator-always-on;
-			regulator-boot-on;
-		};
-	};
-};

Documentation/devicetree/bindings/mfd/ti,lp87561-q1.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ti,lp87561-q1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LP87561-Q1 single 4-phase output buck converter
+
+maintainers:
+  - Keerthy <j-keerthy@ti.com>
+
+properties:
+  compatible:
+    const: ti,lp87561-q1
+
+  reg:
+    description: I2C slave address
+    const: 0x60
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    description:
+      The first cell is the pin number.
+      The second cell is is used to specify flags.
+      See ../gpio/gpio.txt for more information.
+    const: 2
+
+  buck3210-in-supply:
+    description:
+      Voltage regulator supply for all the four BUCK converters.
+
+  regulators:
+    type: object
+
+    properties:
+      buck3210:
+        type: object
+        $ref: /schemas/regulator/regulator.yaml#
+
+    required:
+      - buck3210
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - '#gpio-cells'
+  - buck3210-in-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c@0 {
+        reg = <0x0 0x100>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@60 {
+            compatible = "ti,lp87561-q1";
+            reg = <0x60>;
+            gpio-controller;
+            #gpio-cells = <2>;
+
+            buck3210-in-supply = <&vsys_3v3>;
+
+            regulators {
+                buck3210_reg: buck3210 {
+                    /* VDD_CORE */
+                    regulator-name = "buck3210";
+                    regulator-min-microvolt = <800000>;
+                    regulator-max-microvolt = <800000>;
+                    regulator-always-on;
+                    regulator-boot-on;
+                };
+            };
+        };
+    };
+
+...

Documentation/devicetree/bindings/mfd/ti,lp87565-q1.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ti,lp87565-q1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI LP87565-Q1 / LP87565 dual 2-phase output buck converter
+
+maintainers:
+  - Keerthy <j-keerthy@ti.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: ti,lp87565
+      - const: ti,lp87565-q1
+
+  reg:
+    description: I2C slave address
+    const: 0x60
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    description:
+      The first cell is the pin number.
+      The second cell is is used to specify flags.
+      See ../gpio/gpio.txt for more information.
+    const: 2
+
+  buck10-in-supply:
+    description:
+      Voltage regulator supply for BUCK0 and BUCK1 converters.
+
+  buck23-in-supply:
+    description:
+      Voltage regulator supply for BUCK2 and BUCK3 converters.
+
+  regulators:
+    type: object
+
+    patternProperties:
+      "^buck(10|23)$":
+        type: object
+        $ref: /schemas/regulator/regulator.yaml#
+
+    required:
+      - buck10
+      - buck23
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - '#gpio-cells'
+  - buck10-in-supply
+  - buck23-in-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c@0 {
+        reg = <0x0 0x100>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic@60 {
+            compatible = "ti,lp87565-q1";
+            reg = <0x60>;
+            gpio-controller;
+            #gpio-cells = <2>;
+
+            buck10-in-supply = <&vsys_3v3>;
+            buck23-in-supply = <&vsys_3v3>;
+
+            regulators {
+                buck10_reg: buck10 {
+                    /* VDD_MPU */
+                    regulator-name = "buck10";
+                    regulator-min-microvolt = <850000>;
+                    regulator-max-microvolt = <1250000>;
+                    regulator-always-on;
+                    regulator-boot-on;
+                };
+
+                buck23_reg: buck23 {
+                    /* VDD_GPU */
+                    regulator-name = "buck23";
+                    regulator-min-microvolt = <850000>;
+                    regulator-max-microvolt = <1250000>;
+                    regulator-boot-on;
+                    regulator-always-on;
+                };
+            };
+        };
+    };
+
+...