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sh: clkfwk: Improve the generic clk_set_parent() implementation.

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This causes the generic clk_set_parent() implementation to be a bit more
intelligent. A clk_reparent() is added to move the clock over to the new
parent's sibling list, which then allows the generic rate propagation
code to succeed. This also becomes a nop if the new and old parents are
unchanged.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2009-05-12 05:51:05 +09:00
parent ae891a4264
commit aa87aa343f
2 changed files with 21 additions and 0 deletions
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arch/sh/include/asm/clock.h
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@@ -48,6 +48,7 @@ int clk_init(void);
unsigned long followparent_recalc(struct clk *);
void recalculate_root_clocks(void);
void propagate_rate(struct clk *);
int clk_reparent(struct clk *child, struct clk *parent);
void clk_recalc_rate(struct clk *);
int clk_register(struct clk *);
void clk_unregister(struct clk *);