linux-kernel - Re: [PATCH v2 2/4] dt-bindings: power: supply: Max17040: Add low level SOC alert threshold

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Date:   Mon, 15 Apr 2019 09:13:18 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Matheus Castello <matheus@...tello.eng.br>
Cc:     sre@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>, lee.jones@...aro.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: power: supply: Max17040: Add low
 level SOC alert threshold

On Mon, 15 Apr 2019 at 03:50, Matheus Castello <matheus@...tello.eng.br> wrote:
>
> For configure low level state of charge threshold alert signaled from
> max17040 we add "maxim,alert-soc-level" property.
>
> Signed-off-by: Matheus Castello <matheus@...tello.eng.br>
> ---
>  .../power/supply/max17040_battery.txt         | 24 +++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/supply/max17040_battery.txt
>
> diff --git a/Documentation/devicetree/bindings/power/supply/max17040_battery.txt b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt
> new file mode 100644
> index 000000000000..9b2cc67d556f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt
> @@ -0,0 +1,24 @@
> +max17040_battery
> +~~~~~~~~~~~~~~~~
> +
> +Required properties :
> + - compatible : "maxim,max17040" or "maxim,max77836-battery"
> +
> +Optional properties :
> +- maxim,alert-soc-level :      The alert threshold that sets the state of
> +                               charge level where an interrupt is generated.
> +                               Can be configured from 1 up to 32. If skipped
> +                               the power up default value of 4 will be used.
> +- interrupt-parent :           The GPIO bank from the interrupt line.

It does not have to be GPIO so:
"phandle of the parent interrupt controller"

> +- interrupts :                         Interrupt line see Documentation/devicetree/
> +                               bindings/interrupt-controller/interrupts.txt
> +
> +Example:
> +
> +       battery-charger@36 {

It is a fuel gauge, not battery charger.

Best regards,
Krzysztof

> +               compatible = "maxim,max17040";
> +               reg = <0x36>;
> +               maxim,alert-soc-level = <10>;
> +               interrupt-parent = <&gpio7>;
> +               interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
> +       };
> --
> 2.17.0
>