如am335x-evm.dts:
cpus {
cpu@0 {
cpu0-supply = <&vdd1_reg>;
};
};
&mmc1 {
status = "okay";
vmmc-supply = <&vmmc_reg>;
bus-width = <4>;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mmc1_pins_default>;
pinctrl-1 = <&mmc1_pins_sleep>;
cd-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
wp-gpios = <&gpio3 18 GPIO_ACTIVE_HIGH>;
};
如果 不使用电源管理,是否可以直接删除cpu0-supply = <&vdd1_reg>;和 vmmc-supply = <&vmmc_reg> ?
Jian Zhou:
cpu0-supply = <&vdd1_reg>;和 vmmc-supply = <&vmmc_reg> 如果是代表PMU内部I2C寄存器的,就可以删掉