[参考译文] SK-AM68：在 RPI 接头中启用 SPI 后、测试 SPI 无响应

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1459822/sk-am68-no-response-from-testing-spi-after-enabling-it-in-the-rpi-header

工具与软件：

我已在 RPI 接头中启用 MCU SPI 1接口、但在测试期间未收到响应。 这里是我的设备树、配置中有任何错误？

&wkup_pmx2 {
	mcu_spi1_pins_default: mcu_spi1-default-pins {
        pinctrl-single,pins = <
            J721S2_WKUP_IOPAD(0x058, PIN_OUTPUT, 7) /* (D26) WKUP_GPIO0_0.MCU_SPI1_CLK */
            J721S2_WKUP_IOPAD(0x064, PIN_OUTPUT, 7) /* (C27) WKUP_GPIO0_3.MCU_SPI1_CS0 */
            J721S2_WKUP_IOPAD(0x05c, PIN_OUTPUT, 7) /* (E24) WKUP_GPIO0_1.MCU_SPI1_D0 */
            J721S2_WKUP_IOPAD(0x060, PIN_INPUT, 7) /* (C28) WKUP_GPIO0_2.MCU_SPI1_D1 */
        >;
    };
};

&mcu_spi1 {
        pinctrl-names = "default";
        pinctrl-0 = <&mcu_spi1_pins_default>;
        status = "okay";

        spidev@0 {
                spi-max-frequency = <2000000>;
                reg = <0>;
                compatible = "linux,spidev";
        };
};