state_default: pinctrl0 { gpio { ralink,group = "gpio"; //gpio11 ralink,function = "gpio"; }; perst { ralink,group = "perst"; //gpio36 ralink,function = "gpio"; }; refclk { ralink,group = "refclk"; //gpio3 ralink,function = "gpio"; }; i2s { ralink,group = "i2s"; //gpio0, 1, 2, 3 ralink,function = "gpio"; }; spis { ralink,group = "spis"; //gpio 14, 15, 16, 17 ralink,function = "gpio"; }; wled_kn { ralink,group = "wled_kn"; ralink,function = "gpio"; }; wled_an { ralink,group = "wled_an"; ralink,function = "wled_an"; }; wdt { ralink,group = "wdt"; //gpio38 ralink,function = "gpio"; }; };
以上pinctrl设置主要设置管脚复用功能，参考MT7688 datasheet page25， GPIO pin share scheme，以下图spa
