pwm: rockchip: Make pwm polarity to be configured correctly

If pwm polarity was configured with different values at uboot,
the enable_conf would not be configured correctly.

Change-Id: I55b9ccc262382951a8a82810f1be74ce9460f266
Signed-off-by: Zhou weixin <zwx@rock-chips.com>

diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index f11e1fc9f97bc41c7c9096d971fa0bdd3dd300d8..beab624fb9d98c3ecf1dd38bceab88aa86b662ef 100644 (file)
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -89,6 +89,7 @@ static void rockchip_pwm_set_enable_v2(struct pwm_chip *chip,
                enable_conf |= PWM_DUTY_POSITIVE | PWM_INACTIVE_NEGATIVE;
 
        val = readl_relaxed(pc->base + pc->data->regs.ctrl);
+       val &= ~(GENMASK(5, 0) | BIT(8));
 
        if (enable)
                val |= enable_conf;