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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /Documentation/devicetree/bindings/leds/leds-gpio.yaml
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LEDs connected to GPIO lines
+
+maintainers:
+ - Jacek Anaszewski <jacek.anaszewski@gmail.com>
+ - Pavel Machek <pavel@ucw.cz>
+
+description:
+ Each LED is represented as a sub-node of the gpio-leds device. Each
+ node's name represents the name of the corresponding LED.
+
+properties:
+ compatible:
+ const: gpio-leds
+
+patternProperties:
+ # The first form is preferred, but fall back to just 'led' anywhere in the
+ # node name to at least catch some child nodes.
+ "(^led-[0-9a-f]$|led)":
+ type: object
+ $ref: common.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ gpios:
+ maxItems: 1
+
+ retain-state-suspended:
+ description:
+ The suspend state can be retained.Such as charge-led gpio.
+ type: boolean
+
+ retain-state-shutdown:
+ description:
+ Retain the state of the LED on shutdown. Useful in BMC systems, for
+ example when the BMC is rebooted while the host remains up.
+ type: boolean
+
+ required:
+ - gpios
+
+additionalProperties: false
+
+examples:
+ - |
+
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/leds/common.h>
+
+ leds {
+ compatible = "gpio-leds";
+ led-0 {
+ gpios = <&mcu_pio 0 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "disk-activity";
+ function = LED_FUNCTION_DISK;
+ };
+
+ led-1 {
+ gpios = <&mcu_pio 1 GPIO_ACTIVE_HIGH>;
+ /* Keep LED on if BIOS detected hardware fault */
+ default-state = "keep";
+ function = LED_FUNCTION_FAULT;
+ };
+ };
+
+ run-control {
+ compatible = "gpio-leds";
+ led-0 {
+ gpios = <&mpc8572 6 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_RED>;
+ default-state = "off";
+ };
+ led-1 {
+ gpios = <&mpc8572 7 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_GREEN>;
+ default-state = "on";
+ };
+ };
+
+...