[[PATCH v2] 1/9] dt-bindings: pwm: Document Synopsys DesignWare snps,pwm

[Ben Dooks]

Add documentation for the bindings for Synopsys' DesignWare PWM block
as we will be adding DT/platform support to the Linux driver soon.

Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxx>
--
v2:
- fix #pwm-cells to be 3
- fix indentation and ordering issues
---
 .../devicetree/bindings/pwm/snps,pwm.yaml     | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/snps,pwm.yaml

diff --git a/Documentation/devicetree/bindings/pwm/snps,pwm.yaml b/Documentation/devicetree/bindings/pwm/snps,pwm.yaml
new file mode 100644
index 000000000000..594085e5e26f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/snps,pwm.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/snps,pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys PWM controller
+
+maintainers:
+  - Ben Dooks <ben.dooks@xxxxxxxxxx>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: snps,pwm
+
+  "#pwm-cells":
+    const: 3
+
+  clocks:
+    items:
+      - description: Interface bus clock
+      - description: PWM reference clock
+
+  clock-names:
+    items:
+      - const: bus
+      - const: timer
+
+required:
+  - "#pwm-cells"
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
-- 
2.35.1