linux-kernel - Re: [PATCH v2 02/18] dt-bindings: timer: sp804: add timer-width property

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Message-ID: <20160317170926.GA28934@rob-hp-laptop>
Date:	Thu, 17 Mar 2016 12:09:26 -0500
From:	Rob Herring <robh@...nel.org>
To:	Neil Armstrong <narmstrong@...libre.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	daniel.lezcano@...aro.org, tglx@...utronix.de,
	rmk+kernel@....linux.org.uk, sudeep.holla@....com,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v2 02/18] dt-bindings: timer: sp804: add timer-width
 property

On Wed, Mar 09, 2016 at 11:24:04AM +0100, Neil Armstrong wrote:
> Add timer-width optional property to specify a different vendor
> specific timer counter bit-width.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  Documentation/devicetree/bindings/timer/arm,sp804.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/timer/arm,sp804.txt b/Documentation/devicetree/bindings/timer/arm,sp804.txt
> index 5cd8eee7..141e143 100644
> --- a/Documentation/devicetree/bindings/timer/arm,sp804.txt
> +++ b/Documentation/devicetree/bindings/timer/arm,sp804.txt
> @@ -17,6 +17,8 @@ Optional properties:
>  - arm,sp804-has-irq = <#>: In the case of only 1 timer irq line connected, this
>  	specifies if the irq connection is for timer 1 or timer 2. A value of 1
>  	or 2 should be used.
> +- arm,timer-width: Should contain the width in number of bits of the counter,
> +	is considered by default 32 but can be changed for vendor variants.

That would not be an SP804 nor would the vendor be ARM in that case. So 
add a new compatible string for the vendor that decided to hack up ARM's 
IP block.

Rob