1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/pwm/google,cros-ec-pwm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: PWM controlled by ChromeOS EC
8
9 maintainers:
10 - Thierry Reding <thierry.reding@gmail.com>
11 - '"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>'
12
13 description: |
14 Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller
15 (EC) and controlled via a host-command interface.
16 An EC PWM node should be only found as a sub-node of the EC node (see
17 Documentation/devicetree/bindings/mfd/google,cros-ec.yaml).
18
19 allOf:
20 - $ref: pwm.yaml#
21
22 properties:
23 compatible:
24 oneOf:
25 - description: PWM controlled using EC_PWM_TYPE_GENERIC channels.
26 items:
27 - const: google,cros-ec-pwm
28 - description: PWM controlled using CROS_EC_PWM_DT_<...> types.
29 items:
30 - const: google,cros-ec-pwm-type
31
32 "#pwm-cells":
33 description: The cell specifies the PWM index.
34 const: 1
35
36 required:
37 - compatible
38
39 additionalProperties: false
40
41 examples:
42 - |
43 spi {
44 #address-cells = <1>;
45 #size-cells = <0>;
46
47 cros-ec@0 {
48 compatible = "google,cros-ec-spi";
49 reg = <0>;
50 interrupts = <101 0>;
51
52 cros_ec_pwm: pwm {
53 compatible = "google,cros-ec-pwm";
54 #pwm-cells = <1>;
55 };
56 };
57 };
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