[PATCH 3/4] mach-ux500: export System-on-Chip information ux500 via sysfs

[Greg KH]

On Wed, Aug 10, 2011 at 02:03:41PM +0100, Lee Jones wrote:
> Here we make use of the new drivers/base/soc driver to export
> vital SoC information out to userspace via sysfs. This patch
> provides a data structure of strings to populate the base
> nodes found in:
> 
> /sys/devices/soc/[1|2|3|...]/[family|machine|revision|soc_id].
> 
> It also adds one more node as requested by ST-Ericsson.

What is that node, and why was it requested and where is it documented?