Openwrt開發之mt7688pinctrl設置小知識

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設置主要設置管腳複用功能,參考MT7688 datasheet page25, GPIO pin share scheme,以下圖spa

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