It's safe to disable the clk when we following. pwm_config(pwm, 0, period); pwm_disable(pwm); And enable clk when we do following. pwm_config(pwm, duty, period); pwm_enable(pwm); Tested on OdroidXU3 Board. Signed-off-by: Anand Moon <linux.amoon@xxxxxxxxx> --- drivers/pwm/pwm-samsung.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c index 3e9b583..b579753 100644 --- a/drivers/pwm/pwm-samsung.c +++ b/drivers/pwm/pwm-samsung.c @@ -247,6 +247,7 @@ static int pwm_samsung_enable(struct pwm_chip *chip, struct pwm_device *pwm) tcon &= ~TCON_MANUALUPDATE(tcon_chan); tcon |= TCON_START(tcon_chan) | TCON_AUTORELOAD(tcon_chan); writel(tcon, our_chip->base + REG_TCON); + clk_prepare_enable(our_chip->base_clk); spin_unlock_irqrestore(&samsung_pwm_lock, flags); @@ -265,6 +266,7 @@ static void pwm_samsung_disable(struct pwm_chip *chip, struct pwm_device *pwm) tcon = readl(our_chip->base + REG_TCON); tcon &= ~TCON_AUTORELOAD(tcon_chan); writel(tcon, our_chip->base + REG_TCON); + clk_disable_unprepare(our_chip->base_clk); spin_unlock_irqrestore(&samsung_pwm_lock, flags); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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