RK3568 AP6256\AP6181 wifi驱动以及要点和资料

接口

参考

https://blog.csdn.net/weixin_44710103/article/details/130614423?spm=1001.2101.3001.6650.2&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2-130614423-blog-127049775.235%5Ev39%5Epc_relevant_anti_t3&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2-130614423-blog-127049775.235%5Ev39%5Epc_relevant_anti_t3&utm_relevant_index=5

https://www.jianshu.com/p/26ae7bbc91d7

wifi 驱动失败的可能性原因

1.WL_REG_ON WL_HOST_WAKE 脚位配错,GPIO
2.sdio的电压与高速电路的驱动
3.3V低速,25mhz
1.8v高数,150mhz 具体应该查看芯片手册
3.sdio驱动没使能
sdmmc2: dwmmc@fe000000
4.驱动没加载 , insmod bcmdhd.ko
5.frameware 的路径 和 固件没有准备好,这个可以从dmesg看见打开失败字样

能够驱动起 ap6181 / 6256的模块的配置

wireless_wlan: wireless-wlan {
   
        compatible = "wlan-platdata";
        rockchip,grf = <&grf>;
        pinctrl-names = "default";
	    wifi_chip_type = "ap6256";  //这个名字影响不大,驱动会去目录找芯片对应的bin文件
        pinctrl-0 = <&wifi_host_wake_irq>;
        WIFI,host_wake_irq = <&gpio3 RK_PD4 GPIO_ACTIVE_HIGH>;  //对一下芯片脚位
        status = "okay";
	};

  &sdmmc2 {
   
	max-frequency = <25000000>;  //根据电路电压和芯片原理图确定这个配置
	supports-sdio;
	bus-width = <4>;
	disable-wp;
	cap-sd-highspeed;
	cap-sdio-irq;
	keep-power-in-suspend;
	mmc-pwrseq = <&sdio_pwrseq>;
	non-removable;