mirror of https://gitee.com/openkylin/linux.git
87 lines
2.1 KiB
YAML
87 lines
2.1 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/leds-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: LEDs connected to GPIO lines
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maintainers:
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- Jacek Anaszewski <jacek.anaszewski@gmail.com>
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- Pavel Machek <pavel@ucw.cz>
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description:
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Each LED is represented as a sub-node of the gpio-leds device. Each
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node's name represents the name of the corresponding LED.
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properties:
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compatible:
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const: gpio-leds
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patternProperties:
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# The first form is preferred, but fall back to just 'led' anywhere in the
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# node name to at least catch some child nodes.
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"(^led-[0-9a-f]$|led)":
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type: object
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allOf:
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- $ref: common.yaml#
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properties:
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gpios:
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maxItems: 1
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retain-state-suspended:
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description:
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The suspend state can be retained.Such as charge-led gpio.
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type: boolean
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retain-state-shutdown:
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description:
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Retain the state of the LED on shutdown. Useful in BMC systems, for
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example when the BMC is rebooted while the host remains up.
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type: boolean
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required:
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- gpios
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/leds/common.h>
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leds {
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compatible = "gpio-leds";
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led-0 {
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gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
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linux,default-trigger = "disk-activity";
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function = LED_FUNCTION_DISK;
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};
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led-1 {
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gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>;
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/* Keep LED on if BIOS detected hardware fault */
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default-state = "keep";
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function = LED_FUNCTION_FAULT;
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};
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};
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run-control {
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compatible = "gpio-leds";
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led-0 {
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gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>;
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color = <LED_COLOR_ID_RED>;
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default-state = "off";
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};
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led-1 {
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gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>;
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color = <LED_COLOR_ID_GREEN>;
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default-state = "on";
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};
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};
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...
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