devicetree 设备树查找方法

根据地址查找设备树：

ls -l /proc/device-tree/soc@0/bus@30800000/

 

uart4: serial@30a60000 {
        compatible = "fsl,imx8mp-uart", "fsl,imx6q-uart";
        reg = <0x30a60000 0x10000>;
        interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&clk IMX8MP_CLK_UART4_ROOT>,
        <&clk IMX8MP_CLK_UART4_ROOT>;
        clock-names = "ipg", "per";
        dmas = <&sdma1 28 4 0>, <&sdma1 29 4 0>;
        dma-names = "rx", "tx";
        status = "disabled";
 };