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RV1106上电GPIO状态

Posted: 2026-01-08 7:15
by gingko
我在使用RV1106时,将GPIO3_C4引脚复用为普通IO,但是在上电后他的状态是高电平,我想修改成低电平怎么修改

Re: RV1106上电GPIO状态

Posted: 2026-01-10 2:23
by Crocodile
您好,修改默认状态要配置设备树,参考

Code: Select all

/ {
	//这段添加在根路径下
	gpio3pc4: gpio3pc4 {
		compatible = "regulator-fixed";
		pinctrl-names = "default";
		pinctrl-0 = <&gpio3_pc4>;
		regulator-name = "gpio3_pc4";
		regulator-always-on;
	};
};
&pinctrl{
	gpio {
		gpio3_pc4: gpio3-pc4 {
			rockchip,pins = <3 RK_PC4 RK_FUNC_GPIO &pcfg_pull_down>;
		};
	};
};