1#! /bin/bash 2 3COMPATIBLE=$(cat -v /proc/device-tree/compatible) 4 5if [[ $(expr $COMPATIBLE : ".*rk3562") -ne 0 ]]; then 6 CHIPNAME="rk3562" 7elif [[ $(expr $COMPATIBLE : ".*rk3568") -ne 0 ]]; then 8 CHIPNAME="rk3568" 9else 10 CHIPNAME="rk3358" 11fi 12 13if [[ x"$CHIPNAME" == x"rk3562" ]]; then 14 value=495 15 while [ $value -le 510 ]; do 16 cd /sys/class/gpio 17 echo $value > export 18 echo out > gpio$value/direction 19 echo 0 > gpio$value/value 20 value=$(($value + 1)) 21 done 22fi 23