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authorDoug Brown <doug@schmorgal.com>2022-12-02 21:35:23 +0300
committerThierry Reding <thierry.reding@gmail.com>2022-12-06 14:46:14 +0300
commit092c2ef4571cbc7e5f466bc241ff054723c41973 (patch)
tree5da469a1d113f04cd26dddc09133fb264a1dec2d /drivers/pwm
parent939d002b7501128640aaeffe175d6331dcce2ca6 (diff)
downloadlinux-092c2ef4571cbc7e5f466bc241ff054723c41973.tar.xz
pwm: pxa: Use abrupt shutdown mode
Switch to abrupt shutdown mode in order to stop the clock as soon as possible when PWM is disabled. This minimizes the possibility of the clock being re-enabled while it is still in the process of turning off, which will result in the clock ending up erroneously disabled. Signed-off-by: Doug Brown <doug@schmorgal.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20221113233639.24244-5-doug@schmorgal.com Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-pxa.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c
index cf4d22c91929..00063ead7c0a 100644
--- a/drivers/pwm/pwm-pxa.c
+++ b/drivers/pwm/pwm-pxa.c
@@ -85,7 +85,7 @@ static int pxa_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
else
dc = mul_u64_u64_div_u64(pv + 1, duty_ns, period_ns);
- writel(prescale, pc->mmio_base + offset + PWMCR);
+ writel(prescale | PWMCR_SD, pc->mmio_base + offset + PWMCR);
writel(dc, pc->mmio_base + offset + PWMDCR);
writel(pv, pc->mmio_base + offset + PWMPCR);