I have just build and run Yocto(Pyro 2.3.1) Linux on my Xeon D1500 board, I want to use the SOC's GPIO pins for a push button, so I use "bitbake linux-yocto -c menuconfig" to enable the "Device Drivers"-->"GPIO Support"-->"sysfs interface", and also enable the "Intel ICH GPIO" after the kernel boot on the board, there's a gpiochip available: # cd /sys/class/gpio/ # ls export gpiochip436 unexport # more gpiochip436/ngpio 76 but I got an error when I issue the command to export GPIO#1 # echo 436 > export -sh: echo: write error: No such device or address # echo 437 > export -sh: echo: write error: No such device or address
is there kernel miss configured or something wrong on the operation? Eddy Lai
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