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To: Scott Branden <sbranden@broadcom.com>, Rob Herring <robh+dt@kernel.org>,
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Subject: Re: [alsa-devel] [PATCH 1/2] ASoC: cygnus-audio: adding device tree
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On 03/31/2015 05:16 AM, Scott Branden wrote:
[...]
> +- ssp-port-id: The ssp port interface to use
> +	Valid value are 0, 1, 2, or 3 (for spdif)

How about using 'reg' as the property name here. It is the standard property 
name for identifying or assigning an address to a sub-node.