[PATCH v3 1/2] dt-bindings: pwm: Add bindings doc for Sunplus SoC SP7021 PWM Driver

[Hammer Hsieh <hammerh0314@gmail.com>]

Add bindings doc for Sunplus SoC SP7021 PWM Driver

Signed-off-by: Hammer Hsieh <hammerh0314@gmail.com>
---
Changes in v3:
 - Addressed all comments from Krzysztof Kozlowski.

 .../bindings/pwm/sunplus,sp7021-pwm.yaml           | 42 ++++++++++++++++++++++
 MAINTAINERS                                        |  5 +++
 2 files changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml

diff --git a/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
new file mode 100644
index 0000000..d4fc9e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/sunplus,sp7021-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SoC SP7021 PWM Controller
+
+maintainers:
+  - Hammer Hsieh <hammerh0314@gmail.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: sunplus,sp7021-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#pwm-cells':
+    const: 2
+
+unevaluatedProperties: false
+
+required:
+  - reg
+  - clocks
+
+examples:
+  - |
+    pwm: pwm@9c007a00 {
+      compatible = "sunplus,sp7021-pwm";
+      reg = <0x9c007a00 0x80>;
+      clocks = <&clkc 0xa2>;
+      #pwm-cells = <2>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 2524b75..e1cb7eb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18531,6 +18531,11 @@ L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/ethernet/dlink/sundance.c
 
+SUNPLUS PWM DRIVER
+M:	Hammer Hsieh <hammerh0314@gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
+
 SUNPLUS RTC DRIVER
 M:	Vincent Shih <vincent.sunplus@gmail.com>
 L:	linux-rtc@vger.kernel.org
-- 
2.7.4