Quoting Marek Szyprowski (2020-09-22 05:40:46)
> The ChipID IO region has it's own clock, which is being disabled while
> scanning for unused clocks. It turned out that some CPU hotplug, CPU idle
> or even SOC firmware code depends on the reads from that area. Fix the
> mysterious hang caused by entering deep CPU idle state by ignoring the
> 'chipid' clock during unused clocks scan, as there are no direct clients
> for it which will keep it enabled.
>
> Fixes: e062b571777f ("clk: exynos4: register clocks using common clock framework")
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
Applied to clk-fixes
