[RFC PATCH] dt-bindings: regulator: mps,mp8859: convert to DT schema

[Bhargav Joshi <rougueprince47@gmail.com>]

Convert the Monolithic Power Systems MP8859 voltage regulator binding
from legacy text format to DT schema.

Signed-off-by: Bhargav Joshi <rougueprince47@gmail.com>
---
Note:this patch is part of the process for applying to GSoC device tree
bindings conversion project 
#https://github.com/LinuxFoundationGSoC/ProjectIdeas/wiki/GSoC-2026-Device-Tree-Bindings

 .../devicetree/bindings/regulator/mp8859.txt  | 22 --------
 .../bindings/regulator/mps,mp8859.yaml        | 54 +++++++++++++++++++
 2 files changed, 54 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/regulator/mp8859.txt
 create mode 100644 Documentation/devicetree/bindings/regulator/mps,mp8859.yaml

diff --git a/Documentation/devicetree/bindings/regulator/mp8859.txt b/Documentation/devicetree/bindings/regulator/mp8859.txt
deleted file mode 100644
index 74ad69730989..000000000000
--- a/Documentation/devicetree/bindings/regulator/mp8859.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-Monolithic Power Systems MP8859 voltage regulator
-
-Required properties:
-- compatible: "mps,mp8859";
-- reg: I2C slave address.
-
-Optional subnode for regulator: "mp8859_dcdc", using common regulator
-bindings given in <Documentation/devicetree/bindings/regulator/regulator.txt>.
-
-Example:
-
-	mp8859: regulator@66 {
-		compatible = "mps,mp8859";
-		reg = <0x66>;
-		dc_12v: mp8859_dcdc {
-			regulator-name = "dc_12v";
-			regulator-min-microvolt = <12000000>;
-			regulator-max-microvolt = <12000000>;
-			regulator-boot-on;
-			regulator-always-on;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/regulator/mps,mp8859.yaml b/Documentation/devicetree/bindings/regulator/mps,mp8859.yaml
new file mode 100644
index 000000000000..144876aabd25
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mps,mp8859.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/mps,mp8859.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Monolithic Power Systems MP8859 Voltage Regulator
+
+maintainers:
+  - Markus Reichl <m.reichl@fivetechno.de>
+
+description:
+  The MP8859 is a synchronous, 4-switch, integrated buck-boost converter
+  capable of regulating the output voltage from 2.8V to 22V wide input voltage
+  range with high efficiency.
+
+properties:
+  compatible:
+    const: mps,mp8859
+
+  reg:
+    maxItems: 1
+
+  mp8859_dcdc:
+    $ref: /schemas/regulator/regulator.yaml#
+    type: object
+    description: DCDC regulator subnode
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        regulator@66 {
+            compatible = "mps,mp8859";
+            reg = <0x66>;
+
+            mp8859_dcdc {
+                regulator-name = "dc_12v";
+                regulator-min-microvolt = <12000000>;
+                regulator-max-microvolt = <12000000>;
+                regulator-boot-on;
+                regulator-always-on;
+            };
+        };
+    };
-- 
2.53.0