David, Am Donnerstag, 14. April 2016, 20:48:48 schrieb Wolfram Sang: > > + - input-clk-rate : frequency rate of function clock used(in Hz). If > > omitted, + the default clock rate is used. It is just used at rk3399 soc. > > Why is this needed? Why don't we simply use the default or calculate the > best value somehow? if you need to _get_ the clock-rate, clk_get_rate is the abvious choice and if you need to _set_ some specific rate, I guess it should be done via the assigned-clocks mechanism in the devicetree - see veyron dts files that already do this for some other parts.