开发板型号：Luckfox Lyra Ultra
修改了设备树配置: Lyra-sdk/kernel-6.1/arch/arm/boot/dts/rk3506b-luckfox-lyra-ultra.dts
&uart1 {
pinctrl-0 = <&rm_io20_uart1_tx &rm_io18_uart1_rx>;
status = "okay";
};
&uart2 {
pinctrl-0 = <&rm_io31_uart2_tx &rm_io30_uart2_rx>;
status = "okay";
};
可以生成ttyS1，也是同样的问题 ...