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/dts-v1/;
#include <imx6qdl-pico.dtsi>
#include <imx6qdl-pico-m4.dtsi>
/ {
compatible = "fsl,imx6q-pico", "fsl,imx6q";
model = "Boundary Devices i.MX6 Quad SABRE Lite";
memory {
device_type = "memory";
reg = <0x10000000 0x40000000>;
};
chosen {
compatible = "brcm,bcm2835";
uart_boot = <&uart1>;
};
aliases {
serial0 = &uart1;
};
soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges;
gpio: gpio@0209c000 {
compatible = "fsl,imx6ul-gpio";
reg = <0x0209c000 0x1000>;
interrupts = <GPIOn IRQn>;
gpio-controller;
#gpio-cells = <2>;
};
};
uart1: serial@02020000 {
compatible = "fsl,imx6q-uart", "fsl,imx21-uart";
reg = <0x02020000 0x40000>;
interrupts = <78>;
clocks = <&clks 82>;
clock-names = "ipg", "per";
status = "okay";
};
sound {
compatible = "fsl,imx6-sai";
model = "imx6-sai";
status = "okay";
/* SSI1 */
ssi@021d8000 {
compatible = "fsl,imx6-sai";
reg = <0x021d8000 0x4000>;
interrupts = <0 125 0>;
clocks = <&clks 2>;
dmas = <&sdma 9 11 0>, <&sdma 10 11 0>, <&sdma 11 11 0>;
dma-names = "tx", "rx", "mclk";
status = "okay";
};
};
};
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/: ¸ù½Úµã £¬ÐÎòÕû¸ö×°±¸Ê÷½á¹¹¡£
compatible: Ö¸¶¨×°±¸¼æÈÝÐÔÐÅÏ¢¡£
model: ×°±¸ÐͺÅÐÅÏ¢¡£
memory: ÐÎòÄÚ´æÐÅÏ¢¡£
chosen: ÐÎòһЩѡÏîÐÅÏ¢¡£
aliases: ½ç˵װ±¸ÓÖÃû¡£
soc: ÐÎòSoCÏà¹ØÐÅÏ¢¡£
gpio: ÐÎòGPIO¿ØÖÆÆ÷¡£
uart1: ÐÎòUART1Ó²¼þÐÅÏ¢¡£
sound: ÐÎòÉùÒô×°±¸ÐÅÏ¢¡£
ÔõÑùʹÓÃLinux DTS
±à¼DTSÎļþ£ºÔÚLinuxÄÚºËÔ´ÂëÖеÄarch/arm/boot/dts/Ŀ¼ÏÂÕÒµ½¶ÔӦƽ̨µÄDTSÎļþ£¨Èçimx6qdl-pico.dtsi£© £¬Æ¾Ö¤ÏÖʵӲ¼þÐÅÏ¢±à¼DTSÎļþ¡£
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make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs
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#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
static int my_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
if (!np) {
dev_err(&pdev->dev, "No device tree node found
");
return -ENODEV;
}
// ÆÊÎö×°±¸Ê÷½ÚµãÐÅÏ¢
u32 reg;
if (of_property_read_u32(np, "reg", ®)) {
dev_err(&pdev->dev, "Failed to read 'reg' property
");
return -EINVAL;
}
dev_info(&pdev->dev, "Got 'reg' property: %u
", reg);
return 0;
}
static const struct of_device_id my_driver_of_match[] = {
{ .compatible = "my_driver", },
{ },
};
MODULE_DEVICE_TABLE(of, my_driver_of_match);
static struct platform_driver my_driver = {
.probe = my_driver_probe,
.driver = {
.name = "my_driver",
.of_match_table = my_driver_of_match,
.owner = THIS_MODULE,
}
};
module_platform_driver(my_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Author Name");
MODULE_DESCRIPTION("Sample driver using Device Tree");
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