soc/tegra: pmc: Query PCLK clock rate at probe time

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It is possible to get a lockup if kernel decides to enter LP2 cpuidle
from some clk-notifier, in that case CCF's "prepare" mutex is kept locked
and thus clk_get_rate(pclk) blocks on the same mutex with interrupts being
disabled, hanging machine.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

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Dmitry Osipenko 2019-09-26 22:17:54 +03:00 • committed by Thierry Reding

parent 783807436f

commit e57a243f5d

1 changed files with 59 additions and 15 deletions

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drivers/soc/tegra/pmc.c

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