AM335X BeagleBoneBlack RTC时钟驱动移植

1.内核编译选项

我这里使用的是pcf8563，自己根据RTC芯片型号选择就可以了。

2.设备树

i2c1_pins: pinmux-i2c1-pins {
		pinctrl-single,pins = <
		    AM33XX_IOPAD(0x95c, PIN_INPUT_PULLUP | MUX_MODE2)    
		    AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | MUX_MODE2)    
		>;
};

&i2c1{
	status = "okay";	
	pinctrl-names = "default";
	pinctrl-0 = <&i2c1_pins>;
    rtc1: rtc1@51
	{
		compatible = "nxp,pcf8563";
		reg = <0x51>;
	};
};