clk: keystone: sci-clk: cache results of last query rate operation

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Cache results of the latest query rate operation. This optimizes the
firmware interface a bit, avoiding unnecessary calls to firmware if we
know the result already; the firmware interface is pretty expensive
to use for query rate functionality.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907085740.1083-3-t-kristo@ti.com
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

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Tero Kristo 2020-09-07 11:57:39 +03:00 • committed by Stephen Boyd

parent 2f05cced73

commit d3f3f499cb

1 changed files with 14 additions and 0 deletions

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drivers/clk/keystone/sci-clk.c

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