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| -rw-r--r-- | Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml new file mode 100644 index 000000000..c8577bdf6 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml @@ -0,0 +1,57 @@ +# 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>; + }; + }; + }; |