linux-kernel - Re: [PATCH 1/3] dt-bindings: thermal: Add binding document for SR thermal

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Message-ID: <20180531164820.GA23074@rob-hp-laptop>
Date:   Thu, 31 May 2018 11:48:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Srinath Mannam <srinath.mannam@...adcom.com>
Cc:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        Pramod Kumar <pramod.kumar@...adcom.com>
Subject: Re: [PATCH 1/3] dt-bindings: thermal: Add binding document for SR
 thermal

On Mon, May 28, 2018 at 11:11:22AM +0530, Srinath Mannam wrote:
> From: Pramod Kumar <pramod.kumar@...adcom.com>
> 
> Add binding document for supported thermal implementation
> in Stingray.
> 
> Signed-off-by: Pramod Kumar <pramod.kumar@...adcom.com>
> Reviewed-by: Ray Jui <ray.jui@...adcom.com>
> Reviewed-by: Scott Branden <scott.branden@...adcom.com>
> Reviewed-by: Srinath Mannam <srinath.mannam@...adcom.com>
> ---
>  .../bindings/thermal/brcm,sr-thermal.txt           | 45 ++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> 
> diff --git a/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> new file mode 100644
> index 0000000..33f9e11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> @@ -0,0 +1,45 @@
> +* Broadcom Stingray Thermal
> +
> +This binding describes thermal sensors that is part of Stingray SoCs.
> +
> +Required properties:
> +- compatible : Must be "brcm,sr-thermal"
> +- reg : memory where tmon data will be available.

What type of memory is this?

> +
> +Example:
> +	tmons {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		tmon_ihost0: thermal@...00000 {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f100000 0x4>;
> +		};

Convince me that you need a node per register. This can all be 
accomplished with a single node and either a single reg entry or a 
series of reg entries.

> +
> +		tmon_ihost1: thermal@...00004 {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f100004 0x4>;
> +		};
> +
> +		tmon_ihost2: thermal@...00008 {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f100008 0x4>;
> +		};
> +
> +		tmon_ihost3: thermal@...0000c {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f10000c 0x4>;
> +		};
> +
> +		tmon_crmu: thermal@...00010 {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f100010 0x4>;
> +		};
> +
> +		tmon_nitro: thermal@...00014 {
> +			compatible = "brcm,sr-thermal";
> +			reg = <0x8f100014 0x4>;
> +		};
> +	};
> -- 
> 2.7.4
>