XR829 WIFI可以正常装载FM，BT 串口排除线路干扰问题，应该是串口控制器或者驱动有问题
DTS：

uart1_pins_a: uart1_pins@0 {  
		pins = "PE10", "PE11","PB10", "PB11";
		function = "uart1";
		drive-strength = <10>;
		bias-pull-up;
	};
	
	uart1_pins_b: uart1_pins { 
		pins = "PE10", "PE11","PB10", "PB11";
		function = "gpio_in";
	};

&uart1 {
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&uart1_pins_a>;
	pinctrl-1 = <&uart1_pins_b>;
	status = "okay";
};