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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/pwm/google,cros-ec-pwm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: PWM controlled by ChromeOS EC
maintainers:
- Thierry Reding <thierry.reding@gmail.com>
- '"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>'
description: |
Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller
(EC) and controlled via a host-command interface.
An EC PWM node should be only found as a sub-node of the EC node (see
Documentation/devicetree/bindings/mfd/google,cros-ec.yaml).
allOf:
- $ref: pwm.yaml#
properties:
compatible:
oneOf:
- description: PWM controlled using EC_PWM_TYPE_GENERIC channels.
items:
- const: google,cros-ec-pwm
- description: PWM controlled using CROS_EC_PWM_DT_<...> types.
items:
- const: google,cros-ec-pwm-type
"#pwm-cells":
description: The cell specifies the PWM index.
const: 1
required:
- compatible
- '#pwm-cells'
additionalProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
cros-ec@0 {
compatible = "google,cros-ec-spi";
reg = <0>;
cros_ec_pwm: pwm {
compatible = "google,cros-ec-pwm";
#pwm-cells = <1>;
};
};
};
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