OpenWrt – Rev 1

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/dts-v1/;

#include "rt5350.dtsi"

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

/ {
        compatible = "hilink,hlk-rm04", "ralink,rt5350-soc";
        model = "HILINK HLK-RM04";

        memory@0 {
                device_type = "memory";
                reg = <0x0 0x1000000>;
        };

        chosen {
                bootargs = "console=ttyS1,57600";
        };

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

                /* I2C */
                gpio1 {
                        /* I2C_I2C_SD */
                        gpio-export,name = "hlk-rm04:gpio0";
                        gpio-export,direction_may_change = <1>;
                        gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
                };
                gpio2 {
                        /* I2C_I2C_SCLK */
                        gpio-export,name = "hlk-rm04:gpio1";
                        gpio-export,direction_may_change = <1>;
                        gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
                };
        };

        keys {
                compatible = "gpio-keys-polled";
                poll-interval = <20>;
                reset {
                        label = "reset";
                        gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_RESTART>;
                };
                wps {
                        label = "wps";
                        gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_WPS_BUTTON>;
                };
        };
};

&uart {
        status = "okay";
};

&spi0 {
        status = "okay";

        m25p80@0 {
                compatible = "jedec,spi-nor";
                reg = <0>;
                spi-max-frequency = <10000000>;

                partitions {
                        compatible = "fixed-partitions";
                        #address-cells = <1>;
                        #size-cells = <1>;

                        partition@0 {
                                label = "u-boot";
                                reg = <0x0 0x30000>;
                                read-only;
                        };

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

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

                        partition@50000 {
                                compatible = "denx,uimage";
                                label = "firmware";
                                reg = <0x50000 0x3b0000>;
                        };
                };
        };
};

&pinctrl {
        state_default: pinctrl0 {
                gpio {
                        ralink,group = "i2c", "jtag";
                        ralink,function = "gpio";
                };

                uartf_gpio {
                        ralink,group = "uartf";
                        ralink,function = "gpio uartf";
                };
        };
};

&ethernet {
        mtd-mac-address = <&factory 0x4>;
};

&wmac {
        ralink,mtd-eeprom = <&factory 0>;
};

&ehci {
        status = "okay";
};

&ohci {
        status = "okay";
};