nvkm_wait_usec
nvkm_wait_usec((d), (m) * 1000, (addr), (mask), (data))
if (nvkm_wait_usec(device, 500, GPC_BCAST_NDIV_SLOWDOWN_DEBUG,
if (nvkm_wait_usec(device, 300, GPCPLL_CFG, GPCPLL_CFG_LOCK,
if (nvkm_wait_usec(device, 500, GPC_BCAST_NDIV_SLOWDOWN_DEBUG,
ret = nvkm_wait_usec(device, 10, GPCPLL_DVFS1,