linux-kernel - Re: [PATCH 1/4] dt-bindings: thermal: Introduce monitor-falling parameter to thermal trip point binding

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Date:   Tue, 3 Dec 2019 22:23:57 +0530
From:   Amit Kucheria <amit.kucheria@...durent.com>
To:     Thara Gopinath <thara.gopinath@...aro.org>
Cc:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Linux PM list <linux-pm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] dt-bindings: thermal: Introduce monitor-falling
 parameter to thermal trip point binding

On Thu, Sep 19, 2019 at 7:48 AM Thara Gopinath
<thara.gopinath@...aro.org> wrote:
>
> Introduce a new binding parameter to thermal trip point description
> to indicate whether the temperature level specified by the trip point
> is monitored for a rise or fall in temperature.
>
> Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
> ---
>  Documentation/devicetree/bindings/thermal/thermal.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
> index ca14ba9..849a2a9 100644
> --- a/Documentation/devicetree/bindings/thermal/thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/thermal.txt
> @@ -90,6 +90,14 @@ Required properties:
>         "critical":     Hardware not reliable.
>    Type: string
>
> +Optional property:
> +- monitor-falling:     Indicate whether the system action is kick

Stray space after :

> +  Type: boolean                started when the temperature falls below or rises

Unnecessary tab after boolean (I'll fix up the rest of the file in the
yaml conversion)

I suggest not making this boolean. Just use the property as a flag by
itself to denote a falling trip point. No need to deal with true/false
values.

Similarly, the sysfs file would show up only in case of a trip that
sets this flag and just contain a 1, for example.

> +                       above the trip temperature level indicated in
> +                       "temperature".If true, the trip point is monitored

Add space after full stop.


> +                       for falling temperature else the trip point is
> +                       monitored for rising temperature.
> +
>  * Cooling device maps
>
>  The cooling device maps node is a node to describe how cooling devices
> --
> 2.1.4
>