linux-kernel - Re: [PATCH v3] dt-bindings: leds: Document commonly used LED triggers

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Date:   Thu, 24 Nov 2022 12:05:19 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        jacek.anaszewski@...il.com, pavel@....cz, dmurphy@...com,
        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
Subject: Re: [PATCH v3] dt-bindings: leds: Document commonly used LED triggers

On 23/11/2022 09:11, Manivannan Sadhasivam wrote:
> This commit documents the LED triggers used commonly in the SoCs. Not

Do not use "This commit/patch".
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

> 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, let's also sort the triggers in ascending order.
> 
> Tested-by: Zhen Lei <thunder.leizhen@...wei.com>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
> 
> 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      | 79 ++++++++++++++-----
>  1 file changed, 59 insertions(+), 20 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
> index 3c14a98430e1..0ffed6bcbefd 100644
> --- a/Documentation/devicetree/bindings/leds/common.yaml
> +++ b/Documentation/devicetree/bindings/leds/common.yaml
> @@ -80,26 +80,65 @@ properties:
>      $ref: /schemas/types.yaml#/definitions/string
>  
>      oneOf:
> -      - enum:
> -            # LED will act as a back-light, controlled by the framebuffer system
> -          - backlight
> -            # LED will turn on (but for leds-gpio see "default-state" property in
> -            # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
> -          - default-on
> -            # LED "double" flashes at a load average based rate
> -          - heartbeat
> -            # LED indicates disk activity
> -          - disk-activity
> -            # LED indicates IDE disk activity (deprecated), in new implementations
> -            # use "disk-activity"
> -          - ide-disk
> -            # LED flashes at a fixed, configurable rate
> -          - timer
> -            # LED alters the brightness for the specified duration with one software
> -            # timer (requires "led-pattern" property)
> -          - pattern
> -        # LED is triggered by SD/MMC activity
> -      - pattern: "^mmc[0-9]+$"
> +      - items:

Why items appeared everywhere? It's not explained in commit msg and you
do not have multiple items.

> +          - enum:
> +                # LED indicates mic mute state
> +              - audio-micmute
> +                # LED indicates audio mute state
> +              - audio-mute
> +                # LED will act as a back-light, controlled by the framebuffer system
> +              - backlight
> +                # LED indicates bluetooth power state
> +              - bluetooth-power
> +                # LED indicates activity of all CPUs
> +              - cpu
> +                # LED will turn on (but for leds-gpio see "default-state" property in
> +                # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
> +              - default-on
> +                # LED indicates disk activity
> +              - disk-activity
> +                # LED indicates disk read activity
> +              - disk-read
> +                # LED indicates disk write activity
> +              - disk-write
> +                # LED indicates camera flash state
> +              - flash
> +                # LED "double" flashes at a load average based rate
> +              - heartbeat
> +                # LED indicates IDE disk activity (deprecated), in new implementations
> +                # use "disk-activity"
> +              - ide-disk
> +                # 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 alters the brightness for the specified duration with one software
> +                # timer (requires "led-pattern" property)
> +              - pattern
> +                # LED flashes at a fixed, configurable rate
> +              - timer
> +                # LED indicates camera torch state
> +              - torch
> +                # LED indicates USB gadget activity
> +              - usb-gadget
> +                # LED indicates USB host activity
> +              - usb-host

Split sorting from adding new patterns - it's not possible to judge what
was here and what is new.
Best regards,
Krzysztof