linux-kernel - Re: [PATCH v5] dt-bindings: leds: Document commonly used LED triggers

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Message-ID: <20230213072311.GC4375@thinkpad>
Date:   Mon, 13 Feb 2023 12:53:11 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     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, lee@...nel.org
Subject: Re: [PATCH v5] dt-bindings: leds: Document commonly used LED triggers

On Mon, Feb 13, 2023 at 12:38:27PM +0530, Manivannan Sadhasivam wrote:
> 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.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
> 
> Changes in v5:
> 
> * Rebased on top of v6.2-rc1

Noticed that Lee is now maintaining LED subsystem after sending v5.
So rebased the patch on top of lee/for-leds-next branch and sent v6.

Thanks,
Mani

> 
> 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      | 35 +++++++++++++++++++
>  1 file changed, 35 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
> index f5c57a580078..d01a52e9e982 100644
> --- a/Documentation/devicetree/bindings/leds/common.yaml
> +++ b/Documentation/devicetree/bindings/leds/common.yaml
> @@ -98,9 +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 SD/MMC activity
>        - pattern: "^mmc[0-9]+$"
> +        # LED is triggered by CPU activity
>        - pattern: "^cpu[0-9]*$"
> +        # LED indicates power status of [N]th Bluetooth HCI device
> +      - pattern: "^hci[0-9]{1,2}-power$"
> +        # LED indicates [N]th WLAN Tx/Rx activity
> +      - pattern: "^phy[0-9]{1,2}(tx|rx)$"
>  
>    led-pattern:
>      description: |
> -- 
> 2.25.1
> 

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