i want turn off JTAG to free GPIO,use GPIO0,1,2
follow the Openwrt web:
when run the shell "jtag.to.gpio"
return msg:can't find /dev/mem
Then i do make kernel_menuconfig
And sel Device Drivers --> Character devices -->
[+] /dev/mem virtual device support
Next remake use "make -j8 V=s"
Flash the bin to QCA9531 board
But in the folder /dev/
still have no file named "mem".
What shoud i do next?
i think make kernel_menuconfig
there r some unknow options shoud be sel,but i can't find that?