[PATCH V3 1/2] dt-bindings: pwm: Add pwm-gpio

[Stefan Wahren <wahrenst@gmx.net>]

From: Nicola Di Lieto <nicola.dilieto@gmail.com>

Add bindings for the pwm-gpio driver.

Signed-off-by: Nicola Di Lieto <nicola.dilieto@gmail.com>
Co-developed-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
 .../devicetree/bindings/pwm/pwm-gpio.yaml     | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-gpio.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
new file mode 100644
index 000000000000..4932484563f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic software PWM for modulating GPIOs
+
+maintainers:
+  - Stefan Wahren <wahrenst@gmx.net>
+
+properties:
+  "#pwm-cells":
+    description: |
+      It should be 3. See pwm.yaml in this directory for a
+      description of the cells format.
+    const: 3
+
+  compatible:
+    const: pwm-gpio
+
+  gpios:
+    description:
+      GPIO to be modulated
+    maxItems: 1
+
+required:
+  - "#pwm-cells"
+  - compatible
+  - gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    pwm0 {
+        #pwm-cells = <3>;
+        compatible = "pwm-gpio";
+        gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+    };
--
2.34.1