diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0697-drm-vc4-Limit-max_bpc-to-8-on-Pi0-3.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-0697-drm-vc4-Limit-max_bpc-to-8-on-Pi0-3.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0697-drm-vc4-Limit-max_bpc-to-8-on-Pi0-3.patch b/target/linux/bcm27xx/patches-6.1/950-0697-drm-vc4-Limit-max_bpc-to-8-on-Pi0-3.patch new file mode 100644 index 0000000000..db13ad93d5 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-0697-drm-vc4-Limit-max_bpc-to-8-on-Pi0-3.patch @@ -0,0 +1,37 @@ +From d1e78bb6380ca89d0b00ab60d65d9f34f346b6fe Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +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 <dave.stevenson@raspberrypi.com> +--- + 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); |