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关于tps65910 i2c不能写寄存器的问题

Other Parts Discussed in Thread: TPS65910

大家好:

           我用的是Ti 官方的EVM开发板,Base板的版本是1.5c的,电源管理芯片是tps65910A3,我现在想通过Poweroff命令实现关机,在/driver/mfd/tps65910.c的文件中有tps65910_power_off(void)函数,其中tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL, DEVCTRL_PWR_OFF_MASK)是通过置PWR_OFF位来设置电源管理芯片,但是现在的情况时tps65910_reg_read()能正确独处数据,但是写数据没有效果,写完某一个寄存器之后再读该寄存器没有变化。