PMU_PPE
clkdev_add_pmu("1e180000.ethernet", NULL, 1, 0, PMU_PPE);
clkdev_add_pmu("1e180000.ethernet", "ppe", 1, 0, PMU_PPE);
ltq_pmu_disable(PMU_PPE);
ltq_pmu_enable(PMU_PPE);