linux-kernel - Re: [PATCH 07/12] Documentation: dt: imx: add MSCM documentation

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Message-ID: <57320597.hlx9GuXmaF@wuerfel>
Date:	Wed, 03 Dec 2014 11:52:41 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Stefan Agner <stefan@...er.ch>, shawn.guo@...aro.org,
	kernel@...gutronix.de, linux@....linux.org.uk,
	u.kleine-koenig@...gutronix.de, jason@...edaemon.net,
	olof@...om.net, daniel.lezcano@...aro.org, tglx@...utronix.de,
	mark.rutland@....com, pawel.moll@....com, robh+dt@...nel.org,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/12] Documentation: dt: imx: add MSCM documentation

On Wednesday 03 December 2014 01:12:06 Stefan Agner wrote:
> +Freescale Vybrid Miscellaneous System Control Module
> +
> +The MSCM IP contains Access Control and TrustZone Security hardware,
> +CPU Configuration registers and Interrupt Router control.
> +
> +Required properties:
> +- compatible : "fsl,vf610-mscm"
> +- reg : the register range of the MSCM module
> +
> +Example:
> +       mscm: mscm@...01000 {                 
> +               compatible = "fsl,vf610-mscm";
> +               reg = <0x40001000 0x1000>;    
> +       };                                    

This sounds like one of those generic system controller devices.
Should this be marked as syscon an accessed through
syscon_regmap_lookup_by_phandle()?

If you only eve have one driver touching these registers, that
won't be necessary of course.

	arnd
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