1 # SPDX-License-Identifier: GPL-2.0-only
4 $id: http://devicetree.org/schemas/leds/leds-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: LEDs connected to GPIO lines
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
14 Each LED is represented as a sub-node of the gpio-leds device. Each
15 node's name represents the name of the corresponding LED.
22 # The first form is preferred, but fall back to just 'led' anywhere in the
23 # node name to at least catch some child nodes.
24 "(^led-[0-9a-f]$|led)":
33 retain-state-suspended:
35 The suspend state can be retained.Such as charge-led gpio.
38 retain-state-shutdown:
40 Retain the state of the LED on shutdown. Useful in BMC systems, for
41 example when the BMC is rebooted while the host remains up.
47 additionalProperties: false
52 #include <dt-bindings/gpio/gpio.h>
53 #include <dt-bindings/leds/common.h>
56 compatible = "gpio-leds";
58 gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
59 linux,default-trigger = "disk-activity";
60 function = LED_FUNCTION_DISK;
64 gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>;
65 /* Keep LED on if BIOS detected hardware fault */
66 default-state = "keep";
67 function = LED_FUNCTION_FAULT;
72 compatible = "gpio-leds";
74 gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>;
75 color = <LED_COLOR_ID_RED>;
76 default-state = "off";
79 gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>;
80 color = <LED_COLOR_ID_GREEN>;