| Message ID | 1383296545-18652-2-git-send-email-shawn.guo@linaro.org |
|---|---|
| State | New |
| Headers | show |
diff --git a/arch/arm/mach-imx/clk-pllv3.c b/arch/arm/mach-imx/clk-pllv3.c index f6640b6..c9ca191 100644 --- a/arch/arm/mach-imx/clk-pllv3.c +++ b/arch/arm/mach-imx/clk-pllv3.c @@ -12,6 +12,7 @@ #include <linux/clk.h> #include <linux/clk-provider.h> +#include <linux/delay.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/jiffies.h> @@ -66,6 +67,7 @@ static int clk_pllv3_prepare(struct clk_hw *hw) break; if (time_after(jiffies, timeout)) break; + usleep_range(50, 500); } while (1); if (readl_relaxed(pll->base) & BM_PLL_LOCK)
The pllv3 relock time varies in the range of 50us ~ 500us, depending on the specific PLL type, e.g. 50us for ARM PLL and 450us for Audio/Video PLL. Let's add a usleep_range() call instead of doing busy wait during relock. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> --- arch/arm/mach-imx/clk-pllv3.c | 2 ++ 1 file changed, 2 insertions(+)