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Subject[PATCH E 06/14] PM: OMAP3: Make sure clk_disable_unused() order is correct
Date
From: Tero Kristo <tero.kristo@nokia.com>

Current implementation will disable clocks in the order defined in clock34xx.h,
at least DPLL4_M2X2 will hang in certain cases (and prevent retention / off)
if clocks are not disabled in correct order. This patch makes sure the parent
clocks will be active when disabling a clock.

linux-omap source commit is 672680063420ef8c8c4e7271984bb9cc08171d29.

Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
---
arch/arm/mach-omap2/clock.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 9c62ada..d4d2e7b 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -1078,6 +1078,10 @@ void omap2_clk_disable_unused(struct clk *clk)
return;

printk(KERN_INFO "Disabling unused clock \"%s\"\n", clk->name);
- _omap2_clk_disable(clk);
+ if (cpu_is_omap34xx()) {
+ omap2_clk_enable(clk);
+ omap2_clk_disable(clk);
+ } else
+ _omap2_clk_disable(clk);
}
#endif



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