> Subject: Re: [PATCH v2 2/4] pwm: Add Apple PWM controller > > On Wed, 2 Nov 2022 at 19:02, Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > wrote: > > > I just asked, because you are unnecessarily turning on the clock or > > increasing the usage Count, even if it is not used by anyone during > probe. > > It is used to get the clock rate so it can be used to convert between > seconds and pwm ticks, and the pwm uses that clock, so it is kept > enabled while the pwm is active. You don't need to enable the pwm clock for getting the clock rate. devm_clk_get() and then get the rate. Then enable the clk whenever pwm is enabled And disable the clk whenever pwm is disabled. Cheers, Biju
