dt-bindings: mfd: Convert twl-family.txt to json-schema

Convert the TWL[46]030 binding to DT schema format. To do it as a step by
step work, do not include / handle nodes for subdevices yet, just convert
things with minimal corrections. There are already some bindings for its
subdevices in the tree.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230916100515.1650336-2-andreas@kemnade.info
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/input/twl4030-pwrbutton.txt

@@ -1,7 +1,7 @@
 Texas Instruments TWL family (twl4030) pwrbutton module
 
 This module is part of the TWL4030. For more details about the whole
-chip see Documentation/devicetree/bindings/mfd/twl-family.txt.
+chip see Documentation/devicetree/bindings/mfd/ti,twl.yaml.
 
 This module provides a simple power button event via an Interrupt.
 

Documentation/devicetree/bindings/mfd/ti,twl.yaml

@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ti,twl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TWL family
+
+maintainers:
+  - Andreas Kemnade <andreas@kemnade.info>
+
+description: |
+  The TWLs are Integrated Power Management Chips.
+  Some version might contain much more analog function like
+  USB transceiver or Audio amplifier.
+  These chips are connected to an i2c bus.
+
+properties:
+  compatible:
+    description:
+      TWL4030 for integrated power-management/audio CODEC device used in OMAP3
+      based boards
+      TWL6030/32 for integrated power-management used in OMAP4 based boards
+    enum:
+      - ti,twl4030
+      - ti,twl6030
+      - ti,twl6032
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 1
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-controller
+  - "#interrupt-cells"
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      pmic@48 {
+        compatible = "ti,twl6030";
+        reg = <0x48>;
+        interrupts = <39>; /* IRQ_SYS_1N cascaded to gic */
+        interrupt-controller;
+        #interrupt-cells = <1>;
+        interrupt-parent = <&gic>;
+      };
+    };
+

Documentation/devicetree/bindings/mfd/twl-family.txt

@@ -1,46 +0,0 @@
-Texas Instruments TWL family
-
-The TWLs are Integrated Power Management Chips.
-Some version might contain much more analog function like
-USB transceiver or Audio amplifier.
-These chips are connected to an i2c bus.
-
-
-Required properties:
-- compatible : Must be "ti,twl4030";
-  For Integrated power-management/audio CODEC device used in OMAP3
-  based boards
-- compatible : Must be "ti,twl6030";
-  For Integrated power-management used in OMAP4 based boards
-- interrupts : This i2c device has an IRQ line connected to the main SoC
-- interrupt-controller : Since the twl support several interrupts internally,
-  it is considered as an interrupt controller cascaded to the SoC one.
-- #interrupt-cells = <1>;
-
-Optional node:
-- Child nodes contain in the twl. The twl family is made of several variants
-  that support a different number of features.
-  The children nodes will thus depend of the capability of the variant.
-
-
-Example:
-/*
- * Integrated Power Management Chip
- * https://www.ti.com/lit/ds/symlink/twl6030.pdf
- */
-twl@48 {
-    compatible = "ti,twl6030";
-    reg = <0x48>;
-    interrupts = <39>; /* IRQ_SYS_1N cascaded to gic */
-    interrupt-controller;
-    #interrupt-cells = <1>;
-    interrupt-parent = <&gic>;
-    #address-cells = <1>;
-    #size-cells = <0>;
-
-    twl_rtc {
-        compatible = "ti,twl_rtc";
-        interrupts = <11>;
-        reg = <0>;
-    };
-};