如何把GPIO4.IO[25]配置为输入模式

[yongyang]

我用的是i.mx8mm的芯片，请问如何把GPIO4.IO[25]引脚配置为输入模式，我看了Linux内核源码中的dt-bindings/pinctrl.h的文件中有如下图宏定义，我知道第三个0x000是输入寄存器的偏移地址，然后最后一个值0x0应该是对这个寄存器的写入的值，请问这个引脚可以被配置为输入模式吗？

[pengyong_zhang]

hi @yongyang 

please use the follow link:

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX8-serials-GPIO-input-and-output-sett...

B.R

[pengyong_zhang]

Hii. @yongyang 

Which dtb file do you use? You can refer to the link below to set it up.

https://community.nxp.com/t5/iMX-and-Vybrid-Support/i-MX8MN-GPIO-Configuration-in-Linux/m-p/1678841

B.R

[yongyang]

I can not open your link.