From mboxrd@z Thu Jan 1 00:00:00 1970 From: anarsoul@gmail.com (Vasily Khoruzhick) Date: Thu, 24 Sep 2009 17:33:24 +0300 Subject: Problem with s3c24xx pwm driver In-Reply-To: References: <200909231824.11671.anarsoul@gmail.com> <200909232223.35835.anarsoul@gmail.com> Message-ID: <200909241733.29167.anarsoul@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org ? ????????? ?? 24 ???????? 2009 01:25:46 ?? ????????: > No, it doesn't. > > So my suggestion at the moment is that you may: > > 1. try dump the registers after pwm_enable() and see if all are setup > correctly, > > 2. and make sure those registers are write-able at that time (some > SoC doesn't allow register writing when the controller is disabled). Ok, I've found source of problem: it seems to be some issue with backlight LED driver (hardware, not software) with selected PWM clock. It seems that part of period with "1" is not long enought to charge capacitor, or something like this. PWM itself works fine. Sorry for buzz. Regards Vasily -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: