1、查找 pinmux-pins rk3288:/ # busybox find /d/pinctrl -name pinmux-pins
/d/pinctrl/pinctrl/pinmux-pins 2、cat pinmux-pins rk3399_all:/ # cat /d/pinctrl/pinctrl/pinmux-pins Pinmux settings per pin
Format: pin (name): mux_owner gpio_owner hog?
pin 0 (gpio0