设备树语法问题

NXP IMX6ULL_PRO
1 
spi4 {
    compatible = "spi-gpio";
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_spi4>;
    pinctrl-assert-gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
    status = "okay";
    gpio-sck = <&gpio5 11 0>;
    gpio-mosi = <&gpio5 10 0>;
    cs-gpios = <&gpio5 7 0>;
    num-chipselects = <1>;
    #address-cells = <1>;
    #size-cells = <0>;

    gpio_spi: gpio_spi@0 {
        compatible = "fairchild,74hc595";
        gpio-controller;
        #gpio-cells = <2>;
        reg = <0>;
        registers-number = <1>;
        registers-default = /bits/ 8 <0x57>;
        spi-max-frequency = <10000>;
    };
};

sii902x_reset: sii902x-reset {
        compatible = "gpio-reset";
        reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;
        reset-delay-us = <100000>;
        #reset-cells = <0>;
        status = "okay";
    };

reset-gpios = <&gpio_spi 1 GPIO_ACTIVE_LOW>;这个引脚为什么是gpio_spi1,正常不应该是gpio1,2之类的吗