| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/leds/leds-gpio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: LEDs connected to GPIO lines |
| 8 | |
| 9 | maintainers: |
| 10 | - Jacek Anaszewski <jacek.anaszewski@gmail.com> |
| 11 | - Pavel Machek <pavel@ucw.cz> |
| 12 | |
| 13 | description: |
| 14 | Each LED is represented as a sub-node of the gpio-leds device. Each |
| 15 | node's name represents the name of the corresponding LED. |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | const: gpio-leds |
| 20 | |
| 21 | patternProperties: |
| 22 | # The first form is preferred, but fall back to just 'led' anywhere in the |
| 23 | # node name to at least catch some child nodes. |
| 24 | "(^led-[0-9a-f]$|led)": |
| 25 | type: object |
| 26 | $ref: common.yaml# |
| 27 | unevaluatedProperties: false |
| 28 | |
| 29 | properties: |
| 30 | gpios: |
| 31 | maxItems: 1 |
| 32 | |
| 33 | retain-state-suspended: |
| 34 | description: |
| 35 | The suspend state can be retained.Such as charge-led gpio. |
| 36 | type: boolean |
| 37 | |
| 38 | retain-state-shutdown: |
| 39 | description: |
| 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. |
| 42 | type: boolean |
| 43 | |
| 44 | required: |
| 45 | - gpios |
| 46 | |
| 47 | additionalProperties: false |
| 48 | |
| 49 | examples: |
| 50 | - | |
| 51 | |
| 52 | #include <dt-bindings/gpio/gpio.h> |
| 53 | #include <dt-bindings/leds/common.h> |
| 54 | |
| 55 | leds { |
| 56 | compatible = "gpio-leds"; |
| 57 | led-0 { |
| 58 | gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>; |
| 59 | linux,default-trigger = "disk-activity"; |
| 60 | function = LED_FUNCTION_DISK; |
| 61 | }; |
| 62 | |
| 63 | led-1 { |
| 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; |
| 68 | }; |
| 69 | }; |
| 70 | |
| 71 | run-control { |
| 72 | compatible = "gpio-leds"; |
| 73 | led-0 { |
| 74 | gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>; |
| 75 | color = <LED_COLOR_ID_RED>; |
| 76 | default-state = "off"; |
| 77 | }; |
| 78 | led-1 { |
| 79 | gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>; |
| 80 | color = <LED_COLOR_ID_GREEN>; |
| 81 | default-state = "on"; |
| 82 | }; |
| 83 | }; |
| 84 | |
| 85 | ... |