From: Bichao Zheng bichao.zheng@amlogic.com
[ Upstream commit a279345807e1e0ae79567a52cfdd9d30c9174a3c ]
There is an abnormally low about 20ms,when setting duty repeatedly. Because setting the duty will disable PWM and then enable. Delete this operation now.
Fixes: 211ed630753d2f ("pwm: Add support for Meson PWM Controller") Signed-off-by: Bichao Zheng bichao.zheng@amlogic.com [ Dropped code instead of hiding it behind a comment ] Signed-off-by: Martin Blumenstingl martin.blumenstingl@googlemail.com Reviewed-by: Neil Armstrong narmstrong@baylibre.com Signed-off-by: Thierry Reding thierry.reding@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org
Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/pwm/pwm-meson.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index 4b708c1..e247ab6 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -325,11 +325,6 @@ static int meson_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, if (state->period != channel->state.period || state->duty_cycle != channel->state.duty_cycle || state->polarity != channel->state.polarity) { - if (channel->state.enabled) { - meson_pwm_disable(meson, pwm->hwpwm); - channel->state.enabled = false; - } - if (state->polarity != channel->state.polarity) { if (state->polarity == PWM_POLARITY_NORMAL) meson->inverter_mask |= BIT(pwm->hwpwm);