Messages in this thread | | | Date | Sat, 17 Apr 2021 17:37:28 +0200 | From | Uwe Kleine-König <> | Subject | Re: [PATCH v8 1/8] pwm: pca9685: Switch to atomic API |
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On Mon, Apr 12, 2021 at 03:27:38PM +0200, Clemens Gruber wrote: > The switch to the atomic API goes hand in hand with a few fixes to > previously experienced issues: > - The duty cycle is no longer lost after disable/enable (previously the > OFF registers were cleared in disable and the user was required to > call config to restore the duty cycle settings) > - If one sets a period resulting in the same prescale register value, > the sleep and write to the register is now skipped > - Previously, only the full ON bit was toggled in GPIO mode (and full > OFF cleared if set to high), which could result in both full OFF and > full ON not being set and on=0, off=0, which is not allowed according > to the datasheet > - The OFF registers were reset to 0 in probe, which could lead to the > forbidden on=0, off=0. Fixed by resetting to POR default (full OFF)
I didn't recheck all details, but the patch is definitively an improvement, so:
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Best regards Uwe
-- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | https://www.pengutronix.de/ | [unhandled content-type:application/pgp-signature] | |