[PATCH] pwm: sun4i: Round delay time up to a nearest jiffy

[Uwe Kleine-König]

Hello Roman,

On Wed, Apr 28, 2021 at 02:19:46AM +0200, Roman Beranek wrote:
> More often than not, a PWM period may span nowhere near as far
> as 1 jiffy, yet it still must be waited upon before the channel
> is disabled.

I wonder what happens if you don't wait long enough. Is this a
theoretical issue, or do you see an (occasional?) breakage that is fixed
by this patch?

I guess the problem is that if you disable too early the output freezes
and that might be in a state where the output is still active? Would
polling the PWMx_RDY bit in the control register help here?

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |
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