linux-kernel - [PATCH v2] dt-bindings: pwm: Convert lpc32xx-pwm.txt to YAML

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Message-Id: <20250312122750.6391-1-purvayeshi550@gmail.com>
Date: Wed, 12 Mar 2025 17:57:50 +0530
From: Purva Yeshi <purvayeshi550@...il.com>
To: ukleinek@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	vz@...ia.com,
	piotr.wojtaszczyk@...esys.com
Cc: linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Purva Yeshi <purvayeshi550@...il.com>
Subject: [PATCH v2] dt-bindings: pwm: Convert lpc32xx-pwm.txt to YAML

Convert the existing `lpc32xx-pwm.txt` bindings documentation into a
YAML schema (`nxp,lpc3220-pwm.yaml`).

Set `"#pwm-cells"` to `const: 3` for expected PWM cell properties.

Signed-off-by: Purva Yeshi <purvayeshi550@...il.com>
---
V1 - https://lore.kernel.org/all/20250311125756.24064-1-purvayeshi550@gmail.com/
V2 - Correct filename to match the compatible string, remove unnecessary
quotes in maintainers, and refine commit message.

 .../devicetree/bindings/pwm/lpc32xx-pwm.txt   | 17 ---------
 .../bindings/pwm/nxp,lpc3220-pwm.yaml         | 38 +++++++++++++++++++
 2 files changed, 38 insertions(+), 17 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/nxp,lpc3220-pwm.yaml

diff --git a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt
deleted file mode 100644
index 74b5bc5dd..000000000
--- a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-LPC32XX PWM controller
-
-Required properties:
-- compatible: should be "nxp,lpc3220-pwm"
-- reg: physical base address and length of the controller's registers
-
-Examples:
-
-pwm@...5c000 {
-	compatible = "nxp,lpc3220-pwm";
-	reg = <0x4005c000 0x4>;
-};
-
-pwm@...5c004 {
-	compatible = "nxp,lpc3220-pwm";
-	reg = <0x4005c004 0x4>;
-};
diff --git a/Documentation/devicetree/bindings/pwm/nxp,lpc3220-pwm.yaml b/Documentation/devicetree/bindings/pwm/nxp,lpc3220-pwm.yaml
new file mode 100644
index 000000000..432a5e9d4
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nxp,lpc3220-pwm.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nxp,lpc3220-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LPC32XX PWM controller
+
+maintainers:
+  - Vladimir Zapolskiy <vz@...ia.com>
+  - Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: nxp,lpc3220-pwm
+
+  reg:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pwm@...5c000 {
+        compatible = "nxp,lpc3220-pwm";
+        reg = <0x4005c000 0x4>;
+        #pwm-cells = <3>;
+    };
-- 
2.34.1