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# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
description: PWM LED configuration
compatible: "cros-ec,pwm-leds"
include: base.yaml
properties:
leds:
type: phandles
required: true
description: |
List of pwm-leds nodes. These are expected to have a pwms property
pointing to the relevant PWMs, up to three PWM devices. The order is
matched against the array order of the color-map- properties.
For example
pwmleds {
compatible = "pwm-leds";
pwm_led0: pwm_led_0 {
pwms = <&pwm1 0 PWM_HZ(4800) PWM_POLARITY_INVERTED
&pwm0 0 PWM_HZ(4800) PWM_POLARITY_INVERTED
&pwm2 0 PWM_HZ(4800) PWM_POLARITY_INVERTED>;
};
};
cros-pwmleds {
compatible = "cros-ec,pwm-leds";
leds = <&pwm_led0>;
};
sidesel:
type: phandle
required: false
description: |
A pwm-leds node for the SIDESEL line, if present.
For example
pwmleds {
compatible = "pwm-leds";
pwm_sidesel: pwm_sidesel {
pwms = <&pwm7 0 PWM_HZ(4800) PWM_POLARITY_INVERTED>;
};
};
cros-pwmleds {
compatible = "cros-ec,pwm-leds";
sidesel = <&pwm_sidesel>;
};
frequency:
type: int
required: true
description: |
PWM frequency in Hz for LEDs. SIDESEL, if present, uses half the
frequency.
color-map-red:
type: array
required: false
description: |
A map of PWM duty cycles per color, up to three channels. Unset values
default to zero.
For example
color-map-red = <100 0 0>;
color-map-green = < 0 100 0>;
color-map-blue = < 0 0 100>;
color-map-yellow = <100 70 0>;
color-map-white = <100 70 100>;
color-map-amber = <100 20 0>;
color-map-green:
type: array
required: false
color-map-blue:
type: array
required: false
color-map-yellow:
type: array
required: false
color-map-white:
type: array
required: false
color-map-amber:
type: array
required: false
brightness-range:
type: array
required: false
description: |
A list of brigthness range value for all supported channels in order,
Red, Green, Blue, Yellow, White, Amber (0 to 255).
child-binding:
description: |
LED child binding node for mapping a PWM_LED to a EC_LED_ID.
For example
pwm_led_0@0 {
reg = <0>;
ec-led-name = "EC_LED_ID_LEFT_LED";
};
pwm_led_1@1 {
reg = <1>;
ec-led-name = "EC_LED_ID_RIGHT_LED";
};
properties:
reg:
type: int
required: true
description: LED ID, can be either 0 or 1 for PWM_LED0 and PWM_LED1
enum:
- 0 # PWM_LED0
- 1 # PWM_LED1
ec-led-name:
type: string
required: true
description: The EC_LED_ID value to map the LED to.
|
