Quoting Sean Anderson (2022-11-01 16:27:21) > On 11/1/22 16:10, Stephen Boyd wrote: > >> > >> Oh, I remember why I did this. I need the reference clock for clk_hw_round_rate, > >> which is AFAICT the only correct way to implement round_rate. > >> > > > > Is the reference clk the parent of the clk implementing > > clk_ops::round_rate()? > > Yes. We may be able to produce a given output with multiple reference > rates. However, the clock API provides no mechanism to say "Don't ask > for the parent clock to be rate X, you just tried it and the parent > clock can't support it." So instead, we loop over the possible reference > rates and pick the first one which the parent says it can round to. > Sorry, I'm lost. Why can't you loop over possible reference rates in determine_rate/round_rate clk op here?