From 29b2d6f53c78b54ec1e50d35d8fad24e0c66e323 Mon Sep 17 00:00:00 2001 From: Aurabindo Pillai Date: Mon, 20 Jan 2025 15:27:23 -0500 Subject: [PATCH] drm/amd/display: Temporarily disable hostvm on DCN31 commit ba93dddfc92084a1e28ea447ec4f8315f3d8d3fd upstream. With HostVM enabled, DCN31 fails to pass validation for 3x4k60. Some Linux userspace does not downgrade one of the monitors to 4k30, and the result is that the monitor does not light up. Disable it until the bandwidth calculation failure is resolved. Reviewed-by: Sun peng Li Signed-off-by: Aurabindo Pillai Signed-off-by: Zaeem Mohamed Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c index 80386f698ae4..0ca6358a9782 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn31/dcn31_resource.c @@ -891,7 +891,7 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_z10 = true, .enable_legacy_fast_update = true, .enable_z9_disable_interface = true, /* Allow support for the PMFW interface for disable Z9*/ - .dml_hostvm_override = DML_HOSTVM_NO_OVERRIDE, + .dml_hostvm_override = DML_HOSTVM_OVERRIDE_FALSE, .using_dml2 = false, };