Path: blob/next/external/packages/bsp/rockchip/70-gpio.rules
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# Allow group gpio to access gpiomem device SUBSYSTEM=="rk3288-gpiomem", GROUP="gpio", MODE="0660" # To allow additional features like edge detection SUBSYSTEM=="gpio*", PROGRAM="/bin/sh -c '\ chown -R root:gpio /sys/class/gpio && chmod -R 770 /sys/class/gpio;\ chown -R root:gpio /sys/devices/virtual/gpio && chmod -R 770 /sys/devices/virtual/gpio;\ chown -R root:gpio /sys$devpath && chmod -R 770 /sys$devpath\ '"