pwm: atmel-tcb: add missing clk source config

Clock source changes are never applied to the CMR register.
This may lead to wrong period/duty cycle configuration.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-atmel-tcb.c b/drivers/pwm/pwm-atmel-tcb.c
index ba6ce01035e4feae2c1f40dcf8b24e0ad4923ffa..026696970d7797924fdba501b9c06283c27bc7c4 100644 (file)
--- a/drivers/pwm/pwm-atmel-tcb.c
+++ b/drivers/pwm/pwm-atmel-tcb.c
@@ -249,6 +249,8 @@ static int atmel_tcb_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
                }
        }
 
+       cmr |= (tcbpwm->div & ATMEL_TC_TCCLKS);
+
        __raw_writel(cmr, regs + ATMEL_TC_REG(group, CMR));
 
        if (index == 0)