On Thu, Jun 14, 2012 at 07:36:36PM +0100, Mark Brown wrote:

You're not understanding Linus' point.  The compatible string isn't
useful here because properties like the maximum clock rate of the bus
depend on the board design, not the silicon.  The controller may be
perfectly happy to run at a given rate but other devices on the bus or
the electrical engineering of the PCB itself may restrict this further.

Sorry, I read the next revision and see this was actually resolved OK.