From d1e78bb6380ca89d0b00ab60d65d9f34f346b6fe Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Mon, 24 Apr 2023 18:32:45 +0100 Subject: [PATCH] drm/vc4: Limit max_bpc to 8 on Pi0-3 Pi 0-3 have no deep colour support and only 24bpp output, so max_bpc should remain as 8. Signed-off-by: Dave Stevenson --- drivers/gpu/drm/vc4/vc4_hdmi.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -783,7 +783,6 @@ static int vc4_hdmi_connector_init(struc drm_connector_attach_colorspace_property(connector); drm_connector_attach_tv_margin_properties(connector); - drm_connector_attach_max_bpc_property(connector, 8, 12); connector->polled = (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT); @@ -792,8 +791,12 @@ static int vc4_hdmi_connector_init(struc connector->doublescan_allowed = 0; connector->stereo_allowed = 1; - if (vc4_hdmi->variant->supports_hdr) + if (vc4_hdmi->variant->supports_hdr) { + drm_connector_attach_max_bpc_property(connector, 8, 12); drm_connector_attach_hdr_output_metadata_property(connector); + } else { + drm_connector_attach_max_bpc_property(connector, 8, 8); + } vc4_hdmi_attach_broadcast_rgb_property(dev, vc4_hdmi); vc4_hdmi_attach_output_format_property(dev, vc4_hdmi);