linux-kernel - Re: [PATCH v1 01/16] dt-bindings: power: reset: mediatek: add bindings for power device

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Date:   Mon, 26 Mar 2018 17:24:55 -0500
From:   Rob Herring <robh@...nel.org>
To:     sean.wang@...iatek.com
Cc:     mark.rutland@....com, sre@...nel.org, lee.jones@...aro.org,
        a.zummo@...ertech.it, alexandre.belloni@...e-electrons.com,
        eddie.huang@...iatek.com, devicetree@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 01/16] dt-bindings: power: reset: mediatek: add
 bindings for power device

On Fri, Mar 23, 2018 at 05:14:58PM +0800, sean.wang@...iatek.com wrote:
> From: Sean Wang <sean.wang@...iatek.com>
> 
> Add device-tree binding for the power device responsible for shutdown a
> remote SoC, which is a tiny circuit block present on MediaTek PMIC based
> RTC.
> 
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> ---
>  .../bindings/power/reset/mt6397-rtc-poweroff.txt   | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/reset/mt6397-rtc-poweroff.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/mt6397-rtc-poweroff.txt b/Documentation/devicetree/bindings/power/reset/mt6397-rtc-poweroff.txt
> new file mode 100644
> index 0000000..75a9d7d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/mt6397-rtc-poweroff.txt
> @@ -0,0 +1,24 @@
> +Device-Tree bindings for Power Device on MediaTek PMIC RTC
> +
> +The power device is responsible for externally power off or on the remote
> +MediaTek SoC through the a tiny circuit block BBPU inside PMIC RTC.
> +
> +Required parent node:
> +- rtc
> +	For MediaTek PMIC RTC bindings, see:
> +	Documentation/devicetree/bindings/mfd/mt6397.txt
> +
> +Required properties:
> +- compatible: Should be one of follows
> +	"mediatek,mt6323-rtc-poweroff": for MT6323 PMIC
> +	"mediatek,mt6397-rtc-poweroff": for MT6397 PMIC
> +
> +Example:
> +
> +	rtc {
> +		compatible = "mediatek,mt6323-rtc";
> +
> +		power-off {
> +			compatible = "mediatek,mt6323-rtc-poweroff";
> +		};

There's no need for this node. The OS can register a device in the rtc 
driver.

> +	};
> -- 
> 2.7.4
>