1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/leds/leds-gpio.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: LEDs connected to GPIO lines 8*4882a593Smuzhiyun 9*4882a593Smuzhiyunmaintainers: 10*4882a593Smuzhiyun - Jacek Anaszewski <jacek.anaszewski@gmail.com> 11*4882a593Smuzhiyun - Pavel Machek <pavel@ucw.cz> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyundescription: 14*4882a593Smuzhiyun Each LED is represented as a sub-node of the gpio-leds device. Each 15*4882a593Smuzhiyun node's name represents the name of the corresponding LED. 16*4882a593Smuzhiyun 17*4882a593Smuzhiyunproperties: 18*4882a593Smuzhiyun compatible: 19*4882a593Smuzhiyun const: gpio-leds 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunpatternProperties: 22*4882a593Smuzhiyun # The first form is preferred, but fall back to just 'led' anywhere in the 23*4882a593Smuzhiyun # node name to at least catch some child nodes. 24*4882a593Smuzhiyun "(^led-[0-9a-f]$|led)": 25*4882a593Smuzhiyun type: object 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun $ref: common.yaml# 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun properties: 30*4882a593Smuzhiyun gpios: 31*4882a593Smuzhiyun maxItems: 1 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun retain-state-suspended: 34*4882a593Smuzhiyun description: 35*4882a593Smuzhiyun The suspend state can be retained.Such as charge-led gpio. 36*4882a593Smuzhiyun type: boolean 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun retain-state-shutdown: 39*4882a593Smuzhiyun description: 40*4882a593Smuzhiyun Retain the state of the LED on shutdown. Useful in BMC systems, for 41*4882a593Smuzhiyun example when the BMC is rebooted while the host remains up. 42*4882a593Smuzhiyun type: boolean 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun required: 45*4882a593Smuzhiyun - gpios 46*4882a593Smuzhiyun 47*4882a593SmuzhiyunadditionalProperties: false 48*4882a593Smuzhiyun 49*4882a593Smuzhiyunexamples: 50*4882a593Smuzhiyun - | 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #include <dt-bindings/gpio/gpio.h> 53*4882a593Smuzhiyun #include <dt-bindings/leds/common.h> 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun leds { 56*4882a593Smuzhiyun compatible = "gpio-leds"; 57*4882a593Smuzhiyun led-0 { 58*4882a593Smuzhiyun gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>; 59*4882a593Smuzhiyun linux,default-trigger = "disk-activity"; 60*4882a593Smuzhiyun function = LED_FUNCTION_DISK; 61*4882a593Smuzhiyun }; 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun led-1 { 64*4882a593Smuzhiyun gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>; 65*4882a593Smuzhiyun /* Keep LED on if BIOS detected hardware fault */ 66*4882a593Smuzhiyun default-state = "keep"; 67*4882a593Smuzhiyun function = LED_FUNCTION_FAULT; 68*4882a593Smuzhiyun }; 69*4882a593Smuzhiyun }; 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun run-control { 72*4882a593Smuzhiyun compatible = "gpio-leds"; 73*4882a593Smuzhiyun led-0 { 74*4882a593Smuzhiyun gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>; 75*4882a593Smuzhiyun color = <LED_COLOR_ID_RED>; 76*4882a593Smuzhiyun default-state = "off"; 77*4882a593Smuzhiyun }; 78*4882a593Smuzhiyun led-1 { 79*4882a593Smuzhiyun gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>; 80*4882a593Smuzhiyun color = <LED_COLOR_ID_GREEN>; 81*4882a593Smuzhiyun default-state = "on"; 82*4882a593Smuzhiyun }; 83*4882a593Smuzhiyun }; 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun... 86