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Date: Thu, 10 Dec 2020 11:44:31 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: jacek.anaszewski@...il.com, pavel@....cz, dmurphy@...com,
robh+dt@...nel.org
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-leds@...r.kernel.org, thunder.leizhen@...wei.com,
Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH] dt-bindings: leds: Document commonly used LED triggers
This commit documents the LED triggers used commonly in the SoCs. Not
all triggers are documented as some of them are very application specific.
Most of the triggers documented here are currently used in devicetrees
of many SoCs.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
.../devicetree/bindings/leds/common.yaml | 72 ++++++++++++++-----
1 file changed, 54 insertions(+), 18 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index f1211e7045f1..eee4eb7a4535 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -79,24 +79,60 @@ properties:
the LED.
$ref: /schemas/types.yaml#definitions/string
- enum:
- # LED will act as a back-light, controlled by the framebuffer system
- - backlight
- # LED will turn on (but for leds-gpio see "default-state" property in
- # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
- - default-on
- # LED "double" flashes at a load average based rate
- - heartbeat
- # LED indicates disk activity
- - disk-activity
- # LED indicates IDE disk activity (deprecated), in new implementations
- # use "disk-activity"
- - ide-disk
- # LED flashes at a fixed, configurable rate
- - timer
- # LED alters the brightness for the specified duration with one software
- # timer (requires "led-pattern" property)
- - pattern
+ oneOf:
+ - items:
+ - enum:
+ # LED will act as a back-light, controlled by the framebuffer system
+ - backlight
+ # LED will turn on (but for leds-gpio see "default-state" property in
+ # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
+ - default-on
+ # LED "double" flashes at a load average based rate
+ - heartbeat
+ # LED indicates disk activity
+ - disk-activity
+ # LED indicates IDE disk activity (deprecated), in new implementations
+ # use "disk-activity"
+ - ide-disk
+ # LED flashes at a fixed, configurable rate
+ - timer
+ # LED alters the brightness for the specified duration with one software
+ # timer (requires "led-pattern" property)
+ - pattern
+ # LED indicates camera flash state
+ - flash
+ # LED indicates camera torch state
+ - torch
+ # LED indicates audio mute state
+ - audio-mute
+ # LED indicates mic mute state
+ - audio-micmute
+ # LED indicates bluetooth power state
+ - bluetooth-power
+ # LED indicates USB gadget activity
+ - usb-gadget
+ # LED indicates USB host activity
+ - usb-host
+ # LED indicates MTD memory activity
+ - mtd
+ # LED indicates NAND memory activity (deprecated),
+ # in new implementations use "mtd"
+ - nand-disk
+ # LED indicates disk read activity
+ - disk-read
+ # LED indicates disk write activity
+ - disk-write
+ # No trigger assigned to the LED. This is the default mode
+ # if trigger is absent
+ - none
+ # LED indicates activity of all CPUs
+ - cpu
+ - items:
+ # LED indicates activity of [N]th CPU
+ - pattern: "^cpu[0-9][0-9]$"
+ - items:
+ # LED indicates [N]th MMC storage activity
+ - pattern: '^mmc[0-9][0-9]$'
led-pattern:
description: |
--
2.25.1
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