On 11/30/2016 03:56 AM, Richard Cochran wrote:

On Mon, Nov 28, 2016 at 05:04:24PM -0600, Grygorii Strashko wrote:

quoted

Some CPTS instances, which can be found on KeyStone 2 1/10G Ethernet
Switch Subsystems, can control an external multiplexer that selects
one of up to 32 clocks for time sync reference (RFTCLK). This feature
can be configured through CPTS_RFTCLK_SEL register (offset: x08).

Hence, introduce optional DT cpts_rftclk_sel poperty wich, if present,
will specify CPTS reference clock. The cpts_rftclk_sel should be
omitted in DT if HW doesn't support this feature. The external fixed
rate clocks can be defined in board files as "fixed-clock".

Can't you implement this using the clock tree, rather than an ad-hoc
DT property?

I've thought about this, but decided to move forward with this impl
 which is pretty simple. I will try.


-- 
regards,
-grygorii
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