first commit

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\
+'"