IPH_MEM_POWER_DS_EN  778 drivers/gpu/drm/amd/amdgpu/nv.c 					 IPH_MEM_POWER_DS_EN, 0);
IPH_MEM_POWER_DS_EN  802 drivers/gpu/drm/amd/amdgpu/nv.c 						 IPH_MEM_POWER_DS_EN, enable);