From 0e4d43da347d4f6871e652ccf701936e7810ea54 Mon Sep 17 00:00:00 2001 From: Roman Li Date: Fri, 21 Aug 2026 15:58:30 -0400 Subject: [PATCH] drm/amd/display: Apply debug bit for force p2cpm [WHY] To allow per panel control of PHY settings. [HOW] Add the quirk for specific panels. Reviewed-by: Hansen Dsouza Signed-off-by: Roman Li Signed-off-by: Alex Hung Tested-by: Dan Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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 ab15ceec4daa..93fd5f251a6c 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 @@ -131,6 +131,14 @@ STATIC_IFN_KUNIT void apply_edid_quirks(struct dc_link *link, struct edid *edid, drm_dbg_driver(dev, "Disabling VSC on monitor with panel id %X\n", panel_id); edid_caps->panel_patch.disable_colorimetry = true; break; + case drm_edid_encode_panel_id('S', 'D', 'C', 0x4203): + case drm_edid_encode_panel_id('S', 'D', 'C', 0x4197): + if (dc_is_embedded_signal(link->connector_signal)) { + drm_dbg_driver(dev, "Force PHY power down/up level 2 on panel id %X\n", + panel_id); + link->ctx->dc->debug.psr_phy_force_phy_power_down_up_level_2 = true; + } + break; /* Workaround for monitors that get corrupted by the PHY SSC reduction */ case drm_edid_encode_panel_id('D', 'E', 'L', 0x4147): drm_dbg_driver(dev, "Skip PHY SSC reduction on panel id %X\n", panel_id);