drm/amd/display: Enable FGCG for DCN351

Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/resource/dcn351/dcn351_resource.c

@@ -1893,6 +1893,8 @@ static bool dcn351_resource_construct(
 	if (dc->ctx->dce_environment == DCE_ENV_PRODUCTION_DRV)
 		dc->debug = debug_defaults_drv;
 
+	/*HW default is to have all the FGCG enabled, SW no need to program them*/
+	dc->debug.enable_fine_grain_clock_gating.u32All = 0xFFFF;
 	// Init the vm_helper
 	if (dc->vm_helper)
 		vm_helper_init(dc->vm_helper, 16);