Den 22.09.2022 16.25, skrev Maxime Ripard: > From: Mateusz Kwiatkowski <kfyatek+publicgit@xxxxxxxxx> > > Add support for the following composite output modes (all of them are > somewhat more obscure than the previously defined ones): > > - NTSC_443 - NTSC-style signal with the chroma subcarrier shifted to > 4.43361875 MHz (the PAL subcarrier frequency). Never used for > broadcasting, but sometimes used as a hack to play NTSC content in PAL > regions (e.g. on VCRs). > - PAL_N - PAL with alternative chroma subcarrier frequency, > 3.58205625 MHz. Used as a broadcast standard in Argentina, Paraguay > and Uruguay to fit 576i50 with colour in 6 MHz channel raster. > - PAL60 - 480i60 signal with PAL-style color at normal European PAL > frequency. Another non-standard, non-broadcast mode, used in similar > contexts as NTSC_443. Some displays support one but not the other. > - SECAM - French frequency-modulated analog color standard; also have > been broadcast in Eastern Europe and various parts of Africa and Asia. > Uses the same 576i50 timings as PAL. > > Also added some comments explaining color subcarrier frequency > registers. > > Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@xxxxxxxxx> > Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx> > Acked-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
