ARM: choose highest resolution delay timer
In case there are several possible delay timers, choose the one with the highest resolution. This code relies on the fact secondary CPUs have not yet been brought online when register_current_timer_delay() is called. This is ensured by implementing calibration_delay_done(), Signed-off-by: NPeter De Schrijver <pdeschrijver@nvidia.com> Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NStephen Warren <swarren@nvidia.com>
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