linux-kernel - Re: [PATCH 1/4] dt-binding: gpio: Add Qualcomm SMSM device tree documentation

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Date:	Tue, 01 Sep 2015 11:18:56 +0300
From:	Stanimir Varbanov <svarbanov@...sol.com>
To:	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Alexandre Courbot <gnurou@...il.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Linus Walleij <linus.walleij@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>
CC:	devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-binding: gpio: Add Qualcomm SMSM device tree documentation

On 08/27/2015 08:37 PM, Bjorn Andersson wrote:
> This documents a device tree binding for exposing the Qualcomm Shared
> Memory State Machine as a set of gpio- and interrupt-controllers.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>
> ---
>  .../devicetree/bindings/gpio/qcom,smsm.txt         | 114 +++++++++++++++++++++

<snip>

> += EXAMPLE
> +The following example shows the SMEM setup for controlling properties of the
> +wireless processor, defined from the 8974 apps processor's point-of-view. It
> +encompasses one outbound entry and the outgoing interrupt for the wireless
> +processor.
> +
> +smsm {
> +	compatible = "qcom,smsm";
> +
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	qcom,ipc-3 = <&apcs 8 19>;

Can we use something more descriptive here, for example

qcom,ipc-rpm = <&apcs 8 19>;

and replace these magic numbers with defines?

> +
> +	apps_smsm: apps@0 {
> +		reg = <0>;
> +
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +	};
> +
> +	wcnss_smsm: wcnss@7 {
> +		reg = <7>;
> +		interrupts = <0 144 1>;
> +
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
> +	};
> +};


-- 
regards,
Stan
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