RK3568-spi接口适配W25Q16

编写设备树

&spi0 {status = "okay";pinctrl-names = "default", "high_speed";pinctrl-0 = <&spi0m1_cs0 &spi0m1_pins>;pinctrl-1 = <&spi0m1_cs0 &spi0m1_pins_hs>;cs-gpios = <&gpio2 RK_PD2 GPIO_ACTIVE_HIGH>;m25p80@0 {#address-cells = <1>;#size-cells = <1>;compatible = "winbond,w25q256";reg = <0>;m25p,fast-read;spi-max-frequency = <50000000>;};
};

内核驱动

/kernel/drivers/mtd/devices/m25p80.c