On Tue, May 21, 2024 at 12:13:46PM +0200, Maxime Ripard wrote: > Most of the HDMI controllers have an upper TMDS character rate limit > they can't exceed. On "embedded"-grade display controllers, it will > typically be lower than what high-grade monitors can provide these days, > so drivers will filter the TMDS character rate based on the controller > capabilities. > > To make that easier to handle for drivers, let's provide an optional > hook to be implemented by drivers so they can tell the HDMI controller > helpers if a given TMDS character rate is reachable for them or not. > > This will then be useful to figure out the best format and bpc count for > a given mode. > > Reviewed-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> > Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx> > --- > drivers/gpu/drm/display/drm_hdmi_state_helper.c | 9 +++++++ > drivers/gpu/drm/drm_connector.c | 4 +++ > drivers/gpu/drm/tests/drm_connector_test.c | 14 ++++++++++ > drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 4 +++ > include/drm/drm_connector.h | 31 ++++++++++++++++++++++ > 5 files changed, 62 insertions(+) > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> -- With best wishes Dmitry
