Re: [PATCH v6 08/18] video: tegra20: dc: configure behavior if PLLD/D2 is used

2024-04-19 Thread Thierry Reding
On Tue Jan 23, 2024 at 6:16 PM CET, Svyatoslav Ryhel wrote: > If DISP1 is a PLLD/D2 child, it cannot go over 370MHz. The cause > of this is not quite clear. This can be overcomed by further > halving the PLLD/D2 if the target parent rate is over 800MHz. > This way DISP1 and DSI clocks will have the

[PATCH v6 08/18] video: tegra20: dc: configure behavior if PLLD/D2 is used

2024-01-23 Thread Svyatoslav Ryhel
If DISP1 is a PLLD/D2 child, it cannot go over 370MHz. The cause of this is not quite clear. This can be overcomed by further halving the PLLD/D2 if the target parent rate is over 800MHz. This way DISP1 and DSI clocks will have the same frequency. The shift divider in this case has to be calculated