Quoting Aidan MacDonald (2022-04-28 09:44:53) > Consider CPU, L2 cache, and memory clocks as critical to prevent > them -- and the parent clocks -- from being automatically gated, > since nothing calls clk_get() on these clocks. > > Gating the CPU clock hangs the processor, and gating memory makes > external DRAM inaccessible. Normal kernel code can't hope to deal > with either situation so those clocks have to be critical. > > The L2 cache is required only if caches are running, and could be > gated if the kernel takes care to flush and disable caches before > gating the clock. There's no mechanism to do this, and probably no > reason to do it, so it's simpler to mark the L2 cache as critical. > > Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@xxxxxxxxx> > Reviewed-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> > --- Applied to clk-next
