mmGRPH_X_END
WREG32(mmGRPH_X_END + amdgpu_crtc->crtc_offset, target_fb->width);
WREG32(mmGRPH_X_END + amdgpu_crtc->crtc_offset, target_fb->width);
WREG32(mmGRPH_X_END + amdgpu_crtc->crtc_offset, target_fb->width);