we change pmu from MMPF0100F0EP to MMPF0100F4AEP, now i2c can't work，so we can't config pmu, log as below:
i2c_addr:chip address cycle fail(a1)
Read device ID error!
Net: got MAC address from IIM: 00:00:00:00:00:00
Hit any key to stop autoboot: 0
kernel @ 10808000 (4738520)