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Message-Id: <20230213072133.5977-1-manivannan.sadhasivam@linaro.org>
Date:   Mon, 13 Feb 2023 12:51:33 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     lee@...nel.org, jacek.anaszewski@...il.com, pavel@....cz,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org, thunder.leizhen@...wei.com,
        festevam@...il.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v6] dt-bindings: leds: Document commonly used LED triggers

Document the commonly used LED triggers by 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.

While at it, also place the comment above the triggers (hci, mmc, wlan)
to match the rest of the binding.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---

Changes in v6:

* Rebased on top of lee/for-leds-next branch
* Fixed the comment location for few triggers

Changes in v5:

* Rebased on top of v6.2-rc1

Changes in v4:

* Removed the sorting of triggers
* Removed the "items" as they were not needed
* Reworded the description
* Dropped Zhen Lei's tested-by tag as the patch has changed
* Added kbd-capslock trigger

Changes in v3:

* Rebased on top of v6.1-rc1
* Added WLAN Rx trigger
* Added tested tag from Zhen Lei

Changes in v2:

* Added more triggers, fixed the regex
* Sorted triggers in ascending order

 .../devicetree/bindings/leds/common.yaml      | 37 +++++++++++++++++--
 1 file changed, 34 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index d34bb58c0037..9814371eaa4c 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -98,13 +98,44 @@ properties:
             # LED alters the brightness for the specified duration with one software
             # timer (requires "led-pattern" property)
           - pattern
+            # LED indicates mic mute state
+          - audio-micmute
+            # LED indicates audio mute state
+          - audio-mute
+            # LED indicates bluetooth power state
+          - bluetooth-power
+            # LED indicates activity of all CPUs
+          - cpu
+            # LED indicates disk read activity
+          - disk-read
+            # LED indicates disk write activity
+          - disk-write
+            # LED indicates camera flash state
+          - flash
+            # LED indicated keyboard capslock
+          - kbd-capslock
+            # LED indicates MTD memory activity
+          - mtd
+            # LED indicates NAND memory activity (deprecated),
+            # in new implementations use "mtd"
+          - nand-disk
+            # No trigger assigned to the LED. This is the default mode
+            # if trigger is absent
+          - none
+            # LED indicates camera torch state
+          - torch
+            # LED indicates USB gadget activity
+          - usb-gadget
+            # LED indicates USB host activity
+          - usb-host
+        # LED is triggered by CPU activity
       - pattern: "^cpu[0-9]*$"
-      - pattern: "^hci[0-9]+-power$"
         # LED is triggered by Bluetooth activity
-      - pattern: "^mmc[0-9]+$"
+      - pattern: "^hci[0-9]+-power$"
         # LED is triggered by SD/MMC activity
-      - pattern: "^phy[0-9]+tx$"
+      - pattern: "^mmc[0-9]+$"
         # LED is triggered by WLAN activity
+      - pattern: "^phy[0-9]+tx$"
 
   led-pattern:
     description: |
-- 
2.25.1

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