From edc19bd0e571c732cd01c8da62f904e6d2a29a48 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Tue, 17 Dec 2024 16:00:21 +0100 Subject: pwm: stm32: Fix complementary output in round_waveform_tohw() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When the timer supports complementary output, the CCxNE bit must be set additionally to the CCxE bit. So to not overwrite the latter use |= instead of = to set the former. Fixes: deaba9cff809 ("pwm: stm32: Implementation of the waveform callbacks") Signed-off-by: Fabrice Gasnier Link: https://lore.kernel.org/r/20241217150021.2030213-1-fabrice.gasnier@foss.st.com [ukleinek: Slightly improve commit log] Signed-off-by: Uwe Kleine-König --- drivers/pwm/pwm-stm32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/pwm/pwm-stm32.c') diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index b889e64522c3..17e591f61efb 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -84,7 +84,7 @@ static int stm32_pwm_round_waveform_tohw(struct pwm_chip *chip, wfhw->ccer = TIM_CCER_CCxE(ch + 1); if (priv->have_complementary_output) - wfhw->ccer = TIM_CCER_CCxNE(ch + 1); + wfhw->ccer |= TIM_CCER_CCxNE(ch + 1); rate = clk_get_rate(priv->clk); -- cgit v1.2.3