Tero Kristo <tero.kristo@xxxxxxxxx> writes:
> 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.
>
> Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
Acked-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
And, pulling into next PM branch.
Kevin
> ---
> 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 dbbc7c8..522ce6f 100644
> --- a/arch/arm/mach-omap2/clock.c
> +++ b/arch/arm/mach-omap2/clock.c
> @@ -1012,7 +1012,11 @@ 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);
> if (clk->clkdm.ptr != NULL)
> pwrdm_clkdm_state_switch(clk->clkdm.ptr);
> }
> --
> 1.5.4.3
>
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