dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema

Convert the Texas Instruments DA850/OMAP-L138/AM18x pullup/down
controller bindings to DT schema.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>

Documentation/devicetree/bindings/pinctrl/ti,da850-pupd.txt

@@ -1,55 +0,0 @@
-* Pin configuration for TI DA850/OMAP-L138/AM18x
-
-These SoCs have a separate controller for setting bias (internal pullup/down).
-Bias can only be selected for groups rather than individual pins.
-
-Required Properties:
-
-  - compatible: Must be "ti,da850-pupd"
-  - reg: Base address and length of the memory resource used by the pullup/down
-    controller hardware module.
-
-The controller node also acts as a container for pin group configuration nodes.
-The names of these groups are ignored.
-
-Pin Group Node Properties:
-
-- groups: An array of strings, each string containing the name of a pin group.
-          Valid names are "cp0".."cp31".
-
-The pin configuration parameters use the generic pinconf bindings defined in
-pinctrl-bindings.txt in this directory. The supported parameters are
-bias-disable, bias-pull-up, bias-pull-down.
-
-
-Example
--------
-
-In common dtsi file:
-
-	pinconf: pin-controller@22c00c {
-		compatible = "ti,da850-pupd";
-		reg = <0x22c00c 0x8>;
-	};
-
-In board-specific file:
-
-	&pinconf {
-		pinctrl-0 = <&pinconf_bias_groups>;
-		pinctrl-names = "default";
-
-		pinconf_bias_groups: bias-groups {
-			pull-up {
-				groups = "cp30", "cp31";
-				bias-pull-up;
-			};
-			pull-down {
-				groups = "cp29", "cp28";
-				bias-pull-down;
-			};
-			disable {
-				groups = "cp27", "cp26";
-				bias-disable;
-			};
-		};
-	};

Documentation/devicetree/bindings/pinctrl/ti,da850-pupd.yaml

@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/ti,da850-pupd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DA850/OMAP-L138/AM18x Pin Configuration
+
+maintainers:
+  - Eduard Bostina <egbostina@gmail.com>
+
+description:
+  These SoCs have a separate controller for setting bias (internal pullup/down).
+  Bias can only be selected for groups rather than individual pins.
+  The controller node also acts as a container for pin group configuration nodes.
+  The names of these groups are ignored.
+
+properties:
+  compatible:
+    const: ti,da850-pupd
+
+  reg:
+    maxItems: 1
+
+  pinctrl-0: true
+  pinctrl-names: true
+
+patternProperties:
+  "-groups$":
+    type: object
+    additionalProperties: false
+    patternProperties:
+      "^(disable|pull-(up|down))$":
+        $ref: /schemas/pinctrl/pincfg-node.yaml#
+        properties:
+          groups:
+            $ref: /schemas/types.yaml#/definitions/string-array
+            description: An array of strings containing the name of a pin group.
+            items:
+              pattern: "^cp([0-9]|[1-2][0-9]|3[0-1])$"
+          bias-disable: true
+          bias-pull-up: true
+          bias-pull-down: true
+        additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pinconf: pin-controller@22c00c {
+        compatible = "ti,da850-pupd";
+        reg = <0x22c00c 0x8>;
+        pinctrl-0 = <&pinconf_bias_groups>;
+        pinctrl-names = "default";
+
+        pinconf_bias_groups: bias-groups {
+            pull-up {
+                groups = "cp30", "cp31";
+                bias-pull-up;
+            };
+            pull-down {
+                groups = "cp29", "cp28";
+                bias-pull-down;
+            };
+            disable {
+                groups = "cp27", "cp26";
+                bias-disable;
+            };
+        };
+    };