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arch/arm64/src/imx9/imx9_flexio_pwm.c: Fix wrong input scale and pulse width

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Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This commit is contained in:
Jukka Laitinen 2024-04-05 13:20:20 +03:00 committed by Xiang Xiao
parent bbec17daff
commit 5e5640992d
1 changed files with 2 additions and 3 deletions
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5
arch/arm64/src/imx9/imx9_flexio_pwm.c
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@ -444,8 +444,7 @@ static int pwm_update_frequency(struct imx9_pwmtimer_s *priv, int freq)
static int pwm_update_duty(struct imx9_pwmtimer_s *priv, int pwm_ch, static int pwm_update_duty(struct imx9_pwmtimer_s *priv, int pwm_ch,
ub16_t duty16) ub16_t duty16)
{ {
uint64_t duty = ub16toi(duty16); uint32_t edge = ub16toi(duty16 * priv->period + b16HALF);
uint32_t edge = (duty * priv->period + 0x8000) >> 16;
int timer = pwm_ch - 1; /* map pwm ch 1 to timer 0 etc.. */ int timer = pwm_ch - 1; /* map pwm ch 1 to timer 0 etc.. */
uint32_t regval; uint32_t regval;
@ -477,7 +476,7 @@ static int pwm_update_duty(struct imx9_pwmtimer_s *priv, int pwm_ch,
* timer fully, otherwise just update the duty cycle * timer fully, otherwise just update the duty cycle
*/ */
flexio_putreg(priv, IMX9_FLEXIO_TIMCMP_OFFSET(timer), duty); flexio_putreg(priv, IMX9_FLEXIO_TIMCMP_OFFSET(timer), edge);
if (priv->frequency == 0) if (priv->frequency == 0)
{ {