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