¶ RTC
- 硬件连接
- 首先配置当前系统时间，然后将时间写入rtc
date -d 2024-04-24 18:24
hwclock --systohc
hwclock --show
- 执行效果：
¶ FAN
- 硬件连接，风扇连接在PWM2：
- 设备树配置，rk3588-youyeetoo-yy3588.dts：
fan: pwm-fan {
compatible = "pwm-fan";
#cooling-cells = <2>;
pwms = <&pwm2 0 50000 0>;
cooling-levels = <0 50 100 150 200 255>;
/*rockchip,temp-trips = <
50000 1
55000 2
60000 3
65000 4
70000 5
>;*/
status = "okay";
};
&pwm2 {
pinctrl-names = "active";
pinctrl-0 = <&pwm2m2_pins>;
status = "okay";
};