[PATCH v7 2/2] usb: dt-bindings: ti,twl6030-usb: convert to DT schema

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

Convert the legacy TXT binding for the TWL6030 USB module
to the modern YAML DT schema format. This adds formal validation
and improves documentation using a conditional schema.

The legacy twlxxxx-usb.txt file is no longer needed and is removed.

Signed-off-by: Jihed Chaibi <jihed.chaibi.dev@gmail.com>

---
Changes in v7:
 - At this point the obsolete .txt binding file only contains
   twl6030 related information, therefore it is deleted.

Changes in v6:
 - Reworked 'interrupts' property to use a list of items with
   descriptions per reviewer feedback.

Changes in v5:
 - Split combined twlxxxx-usb binding into a dedicated file for
   twl6030-usb per maintainer feedback.
 - Used more accurate header for interrupt macros.
 - Improved formatting in the examples.
 - This patch also removes the old .txt file.

Changes in v4:
 - This patch is split from larger series per maintainer feedback.
 - v3 link:
    https://lore.kernel.org/all/20250816021523.167049-1-jihed.chaibi.dev@gmail.com/
 - Removed i2c node as it wasn't required by the old binding file.
 - Updated node names to 'usb' and 'usb-phy' in the examples to follow
   generic naming conventions per the Device Tree specification.
 - Replaced raw interrupt values with standard defines for clarity.
 - Improved formatting in the examples for clarity and consistency.

Changes in v3:
 - No changes.

Changes in v2:
 - Added '#phy-cells' property to support PHY framework integration.
---
 .../bindings/usb/ti,twl6030-usb.yaml          | 48 +++++++++++++++++++
 .../devicetree/bindings/usb/twlxxxx-usb.txt   | 21 --------
 2 files changed, 48 insertions(+), 21 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/usb/ti,twl6030-usb.yaml
 delete mode 100644 Documentation/devicetree/bindings/usb/twlxxxx-usb.txt

diff --git a/Documentation/devicetree/bindings/usb/ti,twl6030-usb.yaml b/Documentation/devicetree/bindings/usb/ti,twl6030-usb.yaml
new file mode 100644
index 000000000000..33b6da50660a
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ti,twl6030-usb.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/ti,twl6030-usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments TWL6030 USB Comparator
+
+maintainers:
+  - Peter Ujfalusi <peter.ujfalusi@gmail.com>
+
+description:
+  Bindings for the USB comparator module found within the TWL6030
+  family of companion chips.
+
+properties:
+  compatible:
+    const: ti,twl6030-usb
+
+  interrupts:
+    items:
+      - description: OTG for ID events in host mode
+      - description: USB device mode for VBUS events
+
+  usb-supply:
+    description:
+      Phandle to the VUSB regulator. For TWL6030, this should be the 'vusb'
+      regulator. For TWL6032 subclass, it should be the 'ldousb' regulator.
+
+required:
+  - compatible
+  - interrupts
+  - usb-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    usb {
+        compatible = "ti,twl6030-usb";
+
+        interrupts = <4 IRQ_TYPE_LEVEL_HIGH>, <10 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-parent = <&gic>;
+
+        usb-supply = <&reg_vusb>;
+    };
diff --git a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt b/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
deleted file mode 100644
index 7194c9504b28..000000000000
--- a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-USB COMPARATOR OF TWL CHIPS
-
-TWL6030 USB COMPARATOR
- - compatible : Should be "ti,twl6030-usb"
- - interrupts : Two interrupt numbers to the cpu should be specified. First
-   interrupt number is the otg interrupt number that raises ID interrupts when
-   the controller has to act as host and the second interrupt number is the
-   usb interrupt number that raises VBUS interrupts when the controller has to
-   act as device
- - usb-supply : phandle to the regulator device tree node. It should be vusb
-   if it is twl6030 or ldousb if it is twl6032 subclass.
-
-twl6030-usb {
-	compatible = "ti,twl6030-usb";
-	interrupts = < 4 10 >;
-};
-
-Board specific device node entry
-&twl6030-usb {
-	usb-supply = <&vusb>;
-};
-- 
2.47.2