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| author | saturneric <[email protected]> | 2025-10-16 21:50:56 +0000 |
|---|---|---|
| committer | saturneric <[email protected]> | 2025-10-16 21:50:56 +0000 |
| commit | 5293dcd7ffda472dbf326c81877bb63d2bfcbd10 (patch) | |
| tree | da3be05c4aa1646e5f26a84cd75d83fe866c5358 /drivers/pwm/pwm-imx-tpm.c | |
| parent | Merge tag 'v6.16' (diff) | |
| parent | Linux 6.17 (diff) | |
| download | kernel-5293dcd7ffda472dbf326c81877bb63d2bfcbd10.tar.gz kernel-5293dcd7ffda472dbf326c81877bb63d2bfcbd10.zip | |
Merge tag 'v6.17'
Linux 6.17
Diffstat (limited to 'drivers/pwm/pwm-imx-tpm.c')
| -rw-r--r-- | drivers/pwm/pwm-imx-tpm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-imx-tpm.c b/drivers/pwm/pwm-imx-tpm.c index 7ee7b65b9b90..5b399de16d60 100644 --- a/drivers/pwm/pwm-imx-tpm.c +++ b/drivers/pwm/pwm-imx-tpm.c @@ -205,6 +205,15 @@ static int pwm_imx_tpm_apply_hw(struct pwm_chip *chip, writel(val, tpm->base + PWM_IMX_TPM_SC); /* + * if the counter is disabled (CMOD == 0), programming the new + * period length (MOD) will not reset the counter (CNT). If + * CNT.COUNT happens to be bigger than the new MOD value then + * the counter will end up being reset way too late. Therefore, + * manually reset it to 0. + */ + if (!cmod) + writel(0x0, tpm->base + PWM_IMX_TPM_CNT); + /* * set period count: * if the PWM is disabled (CMOD[1:0] = 2b00), then MOD register * is updated when MOD register is written. |