linux-kernel - Re: [PATCH 05/10] dt-bindings: power: reset: Add bindings for twl6030-power

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Date:   Mon, 22 Aug 2022 14:24:50 -0500
From:   Rob Herring <robh@...nel.org>
To:     Mithil Bavishi <bavishimithil@...il.com>
Cc:     linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        dmitry.torokhov@...il.com, krzysztof.kozlowski+dt@...aro.org,
        lee@...nel.org, sre@...nel.org, tony@...mide.com,
        linux@...linux.org.uk, contact@...lk.fr
Subject: Re: [PATCH 05/10] dt-bindings: power: reset: Add bindings for
 twl6030-power

On Sat, Aug 20, 2022 at 12:46:55PM +0530, Mithil Bavishi wrote:
> Adds documentation for the twl6030 power driver.
> 
> Signed-off-by: Paul Kocialkowski <contact@...lk.fr>
> Signed-off-by: Mithil Bavishi <bavishimithil@...il.com>
> ---
>  .../bindings/power/reset/twl6030-power.txt    | 31 +++++++++++++++++++

New bindings must be DT schema format.

>  1 file changed, 31 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/reset/twl6030-power.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/twl6030-power.txt b/Documentation/devicetree/bindings/power/reset/twl6030-power.txt
> new file mode 100644
> index 000000000..946bb3d9f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/twl6030-power.txt
> @@ -0,0 +1,31 @@
> +Texas Instruments TWL family (twl6030) reset and power management module
> +
> +For now, the binding only supports the complete shutdown of the system after
> +poweroff.
> +
> +Required properties:
> +- compatible : must be
> +       "ti,twl6030-power"
> +
> +Optional properties:
> +
> +- ti,system-power-controller: This indicates that TWL6030 is the

We have a generic property for this.

> +  power supply master of the system. With this flag, the chip will
> +  initiate an ACTIVE-to-OFF or SLEEP-to-OFF transition when the
> +  system poweroffs.
> +
> +Example:
> +&i2c1 {
> +       clock-frequency = <2600000>;
> +
> +       twl: twl@48 {
> +               reg = <0x48>;
> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
> +               interrupt-parent = <&intc>;
> +
> +               twl_power: power {
> +                       compatible = "ti,twl6030-power";
> +                       ti,system-power-controller;

Why do you need a child node here? There aren't any resources for the 
sub-block.

Rob