From dee62df8bb2fe8611fd41ddf02063fa15533298c Mon Sep 17 00:00:00 2001
From: Rabit <home@rabits.org>
Date: Sun, 8 Jul 2018 15:53:57 -0700
Subject: [PATCH] ASUS Tinkerboard: Added rules to enable edge detection for
 gpio

---
 packages/bsp/rockchip/70-gpio.rules | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/bsp/rockchip/70-gpio.rules b/packages/bsp/rockchip/70-gpio.rules
index 4a0c7e1e07..b2e2b2c0ae 100644
--- a/packages/bsp/rockchip/70-gpio.rules
+++ b/packages/bsp/rockchip/70-gpio.rules
@@ -1,2 +1,9 @@
 # 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\
+'"