Am Mittwoch, 15. Februar 2017, 12:27:59 CET schrieb Javier Martinez Canillas: > Hello Doug, > > On Tue, Feb 14, 2017 at 6:01 PM, Douglas Anderson <dianders at chromium.org> wrote: > > The PMU Cortex M0 on rk3399 is intended to be used for things like > > DDRFreq transitions, suspend/resume, and other things that are the > > purview of ARM Trusted Firmware and not the kernel. As such, the > > kernel shouldn't be messing with the clocks. Add CLK_IGNORE_UNUSED to > > these clocks. > > Isn't CLK_IS_CRITICAL a more suitable flag for this case? >From the patch description it looks like the clock is expected to be controlled from firmware in most cases as I guess the Cortex M0 will be used for that all the time now. And the clock is not expected to run all the time. So I'd think clk_ignore_unused is the correct one. The whole clock-subtree for these clocks also does not get affected by other clocks, as it is independendly coming from PLLs. Heiko
