[RFC PATCH] clk: mvebu: armada-xp: Support for MSYS SoC

Andrew Lunn andrew at lunn.ch
Thu Nov 20 07:03:53 PST 2014


On Thu, Nov 20, 2014 at 03:56:30PM +0100, Thomas Petazzoni wrote:
> Dear Chris Packham,
> 
> On Thu, 20 Nov 2014 18:01:19 +1300, Chris Packham wrote:
> > The MSYS SoCs are a range of packet processors with integrated CPUs based
> > on armada-xp. One difference is that the TCLK frequency is fixed at 200MHz
> > as opposed to the fixed 250MHz used on armada-xp. The clock-gating options
> > are a subset of what's available on the armada-xp so this code should be
> > compatible.
> 
> Well, if you have only a subset of what's available, then I would also
> suggest to introduce a separate compatible string for the gatable
> clocks.

For the kirkwood based 98dx4122, we avoided a separate gatable
compatible string, by simply not listing devices which don't
exist. For that SoC, accessing clocks which don't exist is not a
problem. However, accesses devices which don't exist does lock the
SoC.

There is a specific pin-controller compatible string:
marvell,98dx4122-pinctrl, and i guess one is also needed here.

	Andrew



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