openwrt - dts¶

/* cat target/linux/ramips/dts/THINGOO-G1-E-GRAPES.dts */
/dts-v1/;

/* 包含THINGOO-G1.dtsi文件，类似 头文件 */
#include "THINGOO-G1.dtsi"

/ {
        compatible = "yancy,thingoo-g1-e-grapes", "yancy,thingoo-g1", "mediatek,mt7628an-soc";
        model = "THINGOO-G1-E-GRAPES";
        gpio_export {
                compatible = "gpio-export";
                #size-cells = <0>;

                /* 将GPIO 导出到文件中，相当于在系统中执行echo "37" > /sys/class/gpio/export */
                BLE37 {
                        gpio-export,name = "BLE37";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
                };
                BLE39 {
                        gpio-export,name = "BLE39";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
                };
                BLE40 {
                        gpio-export,name = "BLE40";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
                };
                BLE44 {
                        gpio-export,name = "BLE44";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
                };
                BLE45 {
                        gpio-export,name = "BLE45";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
                };
                BLE46 {
                        gpio-export,name = "BLE46";
                        gpio-export,output = <1>;
                        gpios = <&gpio1 14 GPIO_ACTIVE_HIGH>;
                };

        };
};

&spi0 {
        status = "okay";

        pinctrl-names = "default";
        pinctrl-0 = <&spi_pins>, <&spi_cs1_pins>;

        m25p80@0 {
                compatible = "jedec,spi-nor";
                reg = <0>;
                spi-max-frequency = <40000000>;

        partitions {
                        compatible = "fixed-partitions";
                        #address-cells = <1>;
                        #size-cells = <1>;
                        /* 指定mtd的分区 */
                        partition@0 {
                                label = "u-boot";
                                reg = <0x0 0x30000>;
                        };

                        partition@30000 {
                                label = "u-boot-env";
                                reg = <0x30000 0x10000>;
                        };

                        factory: partition@40000 {
                                label = "factory";
                                reg = <0x40000 0x10000>;
                        };

                        partition@50000 {
                                compatible = "denx,uimage";
                                label = "firmware";
                                reg = <0x50000 0x0fb0000>;
                        };
                };

        };

        spidev@1 {
                #address-cells = <1>;
                #size-cells = <1>;
                compatible = "linux,spidev";
                reg = <1>;
                spi-max-frequency = <40000000>;
        };
};

/* cat target/linux/ramips/dts/THINGOO-G1.dtsi */          
#include "mt7628an.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

/ {
        compatible = "yancy,thingoo-g1", "mediatek,mt7628an-soc";

        chosen {
                /* 加载内核时传递的参数，这里指定了串口控制台的设备号和波特率 */
                bootargs = "console=ttyS0,57600";
        };

        memory@0 {
                device_type = "memory";
                /* 这里指定了RAM运行内存的大小为128MB（0x8000000） */
                reg = <0x0 0x8000000>;
        };

        keys {
                compatible = "gpio-keys-polled";
                poll-interval = <20>;
                /* 这里指定了reset按键所用的gpio为(&gpio1) + 6 = GPIO38 */
                /* 为什么等于GPIO38，因为&gpio1的开始地址是GPIO32 */
                reset {
                        label = "reset";
                        /* reset最终会调用hotplug.d中的reset脚本，脚本名字和这里的label名字要对应起来 */
                        gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_RESTART>;
                };
        };

};

&pinctrl {
        state_default: pinctrl0 {
                gpio {
                    /* 这里指定了这些特殊用途的gpio口全部用作纯gpio */
                    ralink,group = "gpio", "uart1", "perst", "refclk", "spis", "i2s", "wled_an", "wled_kn", "p0led_an", "p1led_an", "p2led_an", "p3led_an", "p4led_an", "wdt";
                        ralink,function = "gpio";
                };
        };
};

&i2c {
        status = "okay";
};

&ethernet {
    /* 指定mac地址为factory分区开始的第0x28是mac地址存放位置 */
        mtd-mac-address = <&factory 0x28>;
};

&sdhci {
        status = "okay";
        mediatek,cd-low;
};

&wmac {
        status = "okay";
};