The state of GPIO continues from uboot to the kernel

[lqd]

 Hello everyone,
Our uboot version is 2015.4, the kernel version is Linux3.14.52, and the development board we use is MCIMX6Q-SDB. We configure pin GPIO_17 as the function of GPIO in the uboot stage and set it to low level. But when entering the kernel, the level of GPIO_17 will be pulled up. How can I make GPIO_17 be in a low state since uboot.

[joanxie]

you can refer to the document as below:

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Accessing-GPIO-From-UserSpace/ta-p/11027...

https://community.nxp.com/t5/i-MX-Processors/How-to-set-GPIO-state/m-p/960580