From 1abb92fc59d01c27ae167bf7b8ea9396f30e04ff Mon Sep 17 00:00:00 2001 From: Alex Hung Date: Thu, 16 Oct 2025 20:08:10 -0600 Subject: [PATCH] drm/amd/display: Add HDR workaround for a specific eDP commit 7d08c3b1731014dd1cfd0bf8b0cb1cef9dfd191e upstream. [WHY & HOW] Some eDP panels suffer from flicking when HDR is enabled in KDE or Gnome. This add another quirk to worksaround to skip VSC that is incompatible with an eDP panel. Link: https://gitlab.freedesktop.org/drm/amd/-/issues/4452 Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Hung Signed-off-by: Wayne Lin Tested-by: Dan Wheeler Signed-off-by: Alex Deucher (cherry picked from commit 99441824bec63549a076cd86631d138ec9a0c71c) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 9e3e51a2dc496..7ed7027150d30 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -82,6 +82,7 @@ static void apply_edid_quirks(struct drm_device *dev, struct edid *edid, struct edid_caps->panel_patch.remove_sink_ext_caps = true; break; case drm_edid_encode_panel_id('S', 'D', 'C', 0x4154): + case drm_edid_encode_panel_id('S', 'D', 'C', 0x4171): drm_dbg_driver(dev, "Disabling VSC on monitor with panel id %X\n", panel_id); edid_caps->panel_patch.disable_colorimetry = true; break; -- 2.47.3