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beagleboardblack使用spi0引脚配置的问题



在使用官方sdk在BBB上运行,在内核中配置了spi,包含了一个spi0的设备树文件:am335x-boneblack-spi0.dtsi

如下:

&am33xx_pinmux {
	bb_spi0_pins: pinmux_bb_spi0_pins {
		pinctrl-single,pins = <
			0x150 0x30	/* spi0_sclk.spi0_sclk, INPUT_PULLUP | MODE0 */
			0x154 0x30	/* spi0_d0.spi0_d0, INPUT_PULLUP | MODE0 */
			0x158 0x10	/* spi0_d1.spi0_d1, OUTPUT_PULLUP | MODE0 */
			0x15c 0x10	/* spi0_cs0.spi0_cs0, OUTPUT_PULLUP | MODE0 */
		>;
	};
};

&spi0 {
	#address-cells = <1>;
	#size-cells = <0>;

	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&bb_spi0_pins>;


	channel@0 {
		#address-cells = <1>;
		#size-cells = <0>;

		compatible = "spidev";

		reg = <0>;
		spi-max-frequency = <16000000>;
		spi-cpha;
	};


	channel@1 {
		#address-cells = <1>;
		#size-cells = <0>;

		compatible = "spidev";

		reg = <1>;
		spi-max-frequency = <16000000>;
	};
};
然后重新编译内核和设备树,并启动BBB,在dev目录下有/dev/spidev0.0  /dev/spidev0.1设备,但是并不知道spi引脚是分布在什么地方,按照原理图上面连接设备,但是不能通信:

,这和uart2冲突吗?