Justin,

On Tue, Aug 25, 2015 at 10:55:40AM -0700, Justin Chen wrote:

Hello Guenter,

quoted

Is 'clock-frequency' really needed (and useful), or would it make more sense
to expect the user to configure a fixed clock if nothing else is available ?
How do other drivers handle this ?

The reason for 'clock-frequency' was for a case where our device tree did not
have clocks. Creating a new fixed clock for a single device seems unnecessary
compared to a 'clock-frequency' property. Their is a use for 'clock-frequency',
but it is not really necessary. However, this is my first linux patch, so I do 
not fully trust my judgement on this...

All that is needed for a fixed clock is a devicetree entry for it. Not sure
I understand your line of argument; you add a lot of complexity and code
just to avoid those few lines in the dts file (especially with 500+
"fixed-clock" nodes in other devicetree files).

Thanks,
Guenter