linux-kernel - Re: [PATCH] mfd: syscon: Make it possible to mark syscon as read only

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Message-ID: <8049148.CC5WjPCMxf@wuerfel>
Date:	Fri, 20 Jun 2014 14:17:58 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: syscon: Make it possible to mark syscon as read only

On Thursday 19 June 2014 13:43:46 Bjorn Andersson wrote:
> diff --git a/Documentation/devicetree/bindings/mfd/syscon.txt b/Documentation/devicetree/bindings/mfd/syscon.txt
> index fe8150b..163325af0 100644
> --- a/Documentation/devicetree/bindings/mfd/syscon.txt
> +++ b/Documentation/devicetree/bindings/mfd/syscon.txt
> @@ -13,6 +13,9 @@ Required properties:
>  - compatible: Should contain "syscon".
>  - reg: the register region can be accessed from syscon
>  
> +Optional properties:
> +- read-only: the register region is read only
> +

We've been discussing devices that are simultaneously a
syscon and a more specific device. I'd suggest naming the
new property "syscon,read-only" here, so it becomes clearer
that this is a generic syscon property in that case.

	Arnd
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