linux-kernel - Re: [PATCH 1/4] dt-bindings: soc: Add documentation for the MediaTek SCPSYS unit

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Message-ID: <7hegox6gri.fsf@deeprootsystems.com>
Date:	Mon, 09 Mar 2015 13:46:25 -0700
From:	Kevin Hilman <khilman@...nel.org>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-mediatek@...ts.infradead.org, kernel@...gutronix.de
Subject: Re: [PATCH 1/4] dt-bindings: soc: Add documentation for the MediaTek SCPSYS unit

Sascha Hauer <s.hauer@...gutronix.de> writes:

> This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs.

Curious if this IP unique to the 8173?  or maybe also used on 8135? ...

> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> ---
>  .../devicetree/bindings/soc/mediatek/scpsys.txt    | 32 ++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
>
> diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
> new file mode 100644
> index 0000000..4764a03
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
> @@ -0,0 +1,32 @@
> +MediaTek SCPSYS
> +===============
> +
> +The System Control Processor System (SCPSYS) has several power management
> +related tasks in the system. The tasks include thermal measurement, dynamic
> +voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control.
> +The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power
> +domain control.
> +
> +The driver implements the Generic PM domain bindings described in
> +power/power_domain.txt. It provides the power domains defined in
> +include/dt-bindings/power/mt8173-power.h.
> +
> +Required properties:
> +- compatible: Must be "mediatek,mt8173-scpsys"

... if so, maybe the compatible could/should be slightly more generic?

Kevin

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