Re: [PATCH 09/27] drm/rockchip: dw_hdmi: Set cur_ctr to 0 always

2022-01-27 Thread Sascha Hauer
On Wed, Jan 26, 2022 at 07:42:48AM -0800, Doug Anderson wrote: > Hi, > > On Wed, Jan 26, 2022 at 6:58 AM Sascha Hauer wrote: > > > > From: Douglas Anderson > > > > Jitter was improved by lowering the MPLL bandwidth to account for high > > frequency noise in the rk3288 PLL. In each case MPLL ban

Re: [PATCH 09/27] drm/rockchip: dw_hdmi: Set cur_ctr to 0 always

2022-01-26 Thread Doug Anderson
Hi, On Wed, Jan 26, 2022 at 6:58 AM Sascha Hauer wrote: > > From: Douglas Anderson > > Jitter was improved by lowering the MPLL bandwidth to account for high > frequency noise in the rk3288 PLL. In each case MPLL bandwidth was > lowered only enough to get us a comfortable margin. We believe th

[PATCH 09/27] drm/rockchip: dw_hdmi: Set cur_ctr to 0 always

2022-01-26 Thread Sascha Hauer
From: Douglas Anderson Jitter was improved by lowering the MPLL bandwidth to account for high frequency noise in the rk3288 PLL. In each case MPLL bandwidth was lowered only enough to get us a comfortable margin. We believe that lowering the bandwidth like this is safe given sufficient testing.