Re: [PATCH v2 13/14] drm: rcar-du: Restrict DPLL duty cycle workaround to H3 ES1.x

2017-12-11 Thread Laurent Pinchart
Hi Kieran, I found this e-mail already written and sitting in my outbox, so even if it's quite outdated I decided to still send it. On Tuesday 01 Aug 2017 15:06:20 Kieran Bingham wrote: > On 26/06/17 19:12, Laurent Pinchart wrote: > > The H3 ES1.x exhibits dot clock duty cycle stability issues.

Re: [PATCH v2 13/14] drm: rcar-du: Restrict DPLL duty cycle workaround to H3 ES1.x

2017-08-01 Thread Laurent Pinchart
Hi Kieran, On Tuesday 01 Aug 2017 15:06:20 Kieran Bingham wrote: > On 26/06/17 19:12, Laurent Pinchart wrote: > > The H3 ES1.x exhibits dot clock duty cycle stability issues. We can work > > around them by configuring the DPLL to twice the desired frequency, > > coupled with a /2 post-divider.