On Fri, 17 Jan 2014 12:08:30 +0100, Andreas Herrmann [off-list ref] wrote:

arm-smmu driver uses of_parse_phandle_with_args when parsing DT
information to determine stream IDs for a master device.
Thus the number of stream IDs per master device is bound by
MAX_PHANDLE_ARGS.

To support Calxeda ECX-2000 hardware arm-smmu driver requires a
slightly higher value for MAX_PHANDLE_ARGS as this hardware has 10
stream IDs for one master device.

Increasing it to 16 seems a reasonable choice.

Cc: Grant Likely <redacted>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree at vger.kernel.org
Cc: Andreas Herrmann <redacted>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andreas Herrmann <redacted>

I've merged this one, but I'm not excited about making it any larger
because this structure lives on the stack most of the time.

g.