[PATCH v2 4/9] mfd: dt-bindings: ti,twl4030-power: convert to DT schema

[Jihed Chaibi <jihed.chaibi.dev@gmail.com>]

Convert the legacy TXT binding for the TWL4030 power module
to the modern YAML DT schema format. This adds formal validation
and improves documentation.

Changes in v2:
Simplified the description field by removing redundant '|' as it
does not affect formatting in this context.

Signed-off-by: Jihed Chaibi <jihed.chaibi.dev@gmail.com>
---
 .../bindings/mfd/ti,twl4030-power.yaml        | 69 +++++++++++++++++++
 .../devicetree/bindings/mfd/twl4030-power.txt | 48 -------------
 2 files changed, 69 insertions(+), 48 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mfd/ti,twl4030-power.yaml
 delete mode 100644 Documentation/devicetree/bindings/mfd/twl4030-power.txt

diff --git a/Documentation/devicetree/bindings/mfd/ti,twl4030-power.yaml b/Documentation/devicetree/bindings/mfd/ti,twl4030-power.yaml
new file mode 100644
index 000000000..713e2facf
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ti,twl4030-power.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ti,twl4030-power.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TWL4030-family Power Management Module
+
+maintainers:
+  - Peter Ujfalusi <peter.ujfalusi@gmail.com>
+
+description:
+  The power management module inside the TWL family provides several facilities
+  to control the power resources, including power scripts. For now, the
+  binding only supports the complete shutdown of the system after poweroff.
+
+properties:
+  compatible:
+    description: |
+      The compatible string determines the specific power configuration.
+        "ti,twl4030-power": Standard power control.
+        "ti,twl4030-power-reset": Recommended for OMAP3530 and similar SoCs
+          that require a special configuration for warm reset to work correctly.
+        "ti,twl4030-power-idle": Loads the TI-recommended configuration for
+          idle modes into the PMIC.
+        "ti,twl4030-power-idle-osc-off": Uses the recommended idle configuration
+          but also shuts down the external oscillator. This may not work on all
+          boards depending on the oscillator wiring.
+
+    enum:
+      - ti,twl4030-power
+      - ti,twl4030-power-reset
+      - ti,twl4030-power-idle
+      - ti,twl4030-power-idle-osc-off
+
+  ti,system-power-controller:
+    type: boolean
+    description:
+      Indicates that the TWL4030 is the power supply master of the system,
+      allowing it to initiate system power-off.
+
+  ti,use_poweroff:
+    type: boolean
+    description: Deprecated name for ti,system-power-controller.
+    deprecated: true
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      clock-frequency = <2600000>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      twl: twl@48 {
+        reg = <0x48>;
+        interrupts = <7>; /* SYS_NIRQ cascaded to intc */
+        interrupt-parent = <&intc>;
+
+        twl_power: power {
+          compatible = "ti,twl4030-power";
+          ti,use_poweroff;
+        };
+      };
+    };
diff --git a/Documentation/devicetree/bindings/mfd/twl4030-power.txt b/Documentation/devicetree/bindings/mfd/twl4030-power.txt
deleted file mode 100644
index 3d1996331..000000000
--- a/Documentation/devicetree/bindings/mfd/twl4030-power.txt
+++ /dev/null
@@ -1,48 +0,0 @@
-Texas Instruments TWL family (twl4030) reset and power management module
-
-The power management module inside the TWL family provides several facilities
-to control the power resources, including power scripts. For now, the
-binding only supports the complete shutdown of the system after poweroff.
-
-Required properties:
-- compatible : must be one of the following
-	"ti,twl4030-power"
-	"ti,twl4030-power-reset"
-	"ti,twl4030-power-idle"
-	"ti,twl4030-power-idle-osc-off"
-
-The use of ti,twl4030-power-reset is recommended at least on
-3530 that needs a special configuration for warm reset to work.
-
-When using ti,twl4030-power-idle, the TI recommended configuration
-for idle modes is loaded to the tlw4030 PMIC.
-
-When using ti,twl4030-power-idle-osc-off, the TI recommended
-configuration is used with the external oscillator being shut
-down during off-idle. Note that this does not work on all boards
-depending on how the external oscillator is wired.
-
-Optional properties:
-
-- ti,system-power-controller: This indicates that TWL4030 is the
-  power supply master of the system. With this flag, the chip will
-  initiate an ACTIVE-to-OFF or SLEEP-to-OFF transition when the
-  system poweroffs.
-
-- ti,use_poweroff: Deprecated name for ti,system-power-controller
-
-Example:
-&i2c1 {
-	clock-frequency = <2600000>;
-
-	twl: twl@48 {
-		reg = <0x48>;
-		interrupts = <7>; /* SYS_NIRQ cascaded to intc */
-		interrupt-parent = <&intc>;
-
-		twl_power: power {
-			compatible = "ti,twl4030-power";
-			ti,use_poweroff;
-		};
-	};
-};
-- 
2.39.5