clk: clk-mux: implement remuxing on set_rate

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Implement clk-mux remuxing if the CLK_SET_RATE_NO_REPARENT flag isn't
set. This implements determine_rate for clk-mux to propagate to each
parent and to choose the best one (like clk-divider this chooses the
parent which provides the fastest rate <= the requested rate).

The determine_rate op is implemented as a core helper function so that
it can be easily used by more complex clocks which incorporate muxes.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Mike Turquette <mturquette@linaro.org>

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James Hogan 2013-07-29 12:25:02 +01:00 • committed by Mike Turquette

parent 819c1de344

commit e366fdd725

3 changed files with 53 additions and 0 deletions

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1

drivers/clk/clk-mux.c

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49

drivers/clk/clk.c

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3

include/linux/clk-provider.h

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