OpenWrt – Rev 4

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/dts-v1/;

#include "mt7621.dtsi"

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

/ {
        compatible = "xiaomi,mir3g", "mediatek,mt7621-soc";
        model = "Xiaomi Mi Router 3G";

        memory@0 {
                device_type = "memory";
                reg = <0x0 0x10000000>;
        };

        chosen {
                bootargs = "console=ttyS0,115200n8";
        };

        gpio-leds {
                compatible = "gpio-leds";

                status_red {
                        label = "mir3g:red:status";
                        gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
                };

                status_blue {
                        label = "mir3g:blue:status";
                        gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
                };

                status_yellow {
                        label = "mir3g:yellow:status";
                        gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
                };

                wan_amber {
                        label = "mir3g:amber:wan";
                        gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
                };

                lan1_amber {
                        label = "mir3g:amber:lan1";
                        gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
                };

                lan2_amber {
                        label = "mir3g:amber:lan2";
                        gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
                };

        };

        gpio-keys-polled {
                compatible = "gpio-keys-polled";
                #address-cells = <1>;
                #size-cells = <0>;
                poll-interval = <20>;

                reset {
                        label = "reset";
                        gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_RESTART>;
                };
        };

        gpio_export {
                compatible = "gpio-export";
                #size-cells = <0>;

                usbpower {
                        gpio-export,name = "usbpower";
                        gpio-export,output = <1>;
                        gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
                };
        };
};

&nand {
        status = "okay";

        partition@0 {
                label = "Bootloader";
                reg = <0x0 0x80000>;
                read-only;
        };

        partition@80000 {
                label = "Config";
                reg = <0x80000 0x40000>;
        };

        partition@c0000 {
                label = "Bdata";
                reg = <0xc0000 0x40000>;
                read-only;
        };

        factory: partition@100000 {
                label = "Factory";
                reg = <0x100000 0x40000>;
                read-only;
        };

        partition@140000 {
                label = "crash";
                reg = <0x140000 0x40000>;
        };

        partition@180000 {
                label = "crash_syslog";
                reg = <0x180000 0x40000>;
        };

        partition@1c0000 {
                label = "reserved0";
                reg = <0x1c0000 0x40000>;
                read-only;
        };

        /* uboot expects to find kernels at 0x200000 & 0x600000
         * referred to as system 1 & system 2 respectively.
         * a kernel is considered suitable for handing control over
         * if its linux magic number exists & uImage CRC are correct.
         * If either of those conditions fail, a matching sys'n'_fail flag
         * is set in uboot env & a restart performed in the hope that the
         * alternate kernel is okay.
         * if neither kernel checksums ok and both are marked failed, system 2
         * is booted anyway.
         *
         * Note uboot's tftp flash install writes the transferred
         * image to both kernel partitions.
         */

        partition@200000 {
                label = "kernel_stock";
                reg = <0x200000 0x400000>;
        };

        partition@600000 {
                label = "kernel";
                reg = <0x600000 0x400000>;
        };

        /* ubi partition is the result of squashing
         * next consecutive stock partitions:
         * - rootfs0 (rootfs partition for stock kernel0),
         * - rootfs1 (rootfs partition for stock failsafe kernel1),
         * - overlay (used as ubi overlay in stock fw)
         * resulting 117,5MiB space for packages.
         */

        partition@a00000 {
                label = "ubi";
                reg = <0xa00000 0x7580000>;
        };
};

&pcie {
        status = "okay";

        pcie0 {
                wifi@14c3,7603 {
                        compatible = "pci14c3,7603";
                        reg = <0x0000 0 0 0 0>;
                        mediatek,mtd-eeprom = <&factory 0x0000>;
                        ieee80211-freq-limit = <2400000 2500000>;
                };
        };

        pcie1 {
                wifi@14c3,7662 {
                        compatible = "pci14c3,7662";
                        reg = <0x0000 0 0 0 0>;
                        mediatek,mtd-eeprom = <&factory 0x8000>;
                        ieee80211-freq-limit = <5000000 6000000>;
                };
        };
};

&ethernet {
        mtd-mac-address = <&factory 0xe000>;
        mediatek,portmap = "lwlll";
};

&pinctrl {
        state_default: pinctrl0 {
                gpio {
                        ralink,group = "jtag", "uart2", "uart3", "wdt";
                        ralink,function = "gpio";
                };
        };
};