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-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-gpio.yaml46
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
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+++ b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
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+# 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>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: pwm-gpio
+
+ "#pwm-cells":
+ const: 3
+ description:
+ See pwm.yaml in this directory for a description of the cells format.
+ The first cell which represents the PWM instance number must always
+ be zero.
+
+ gpios:
+ description:
+ GPIO to be modulated
+ maxItems: 1
+
+required:
+ - compatible
+ - "#pwm-cells"
+ - gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ pwm {
+ #pwm-cells = <3>;
+ compatible = "pwm-gpio";
+ gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+ };