49960
udev 规则持久地更改节点权限了，
修改/etc/udev/rules.d/99-rockchip-permissions.rules 改为0666
diff --git a/99-rockchip-permissions.rules b/99-rockchip-permissions.rules
index 18b1fc3..3117fb2 100644
--- a/99-rockchip-permissions.rules
+++ b/99-rockchip-permissions.rules
@@ -11,7 +11,7 @@ KERNEL=="vpu[_-]service", MODE="0660", GROUP="video"
KERNEL=="hevc[_-]service", MODE="0660", GROUP="video"
# RGA device
-KERNEL=="rga", MODE="0660", GROUP="video"
+KERNEL=="rga", MODE="0666", GROUP="video"
# MALI devices (/dev/mali for mali400)
KERNEL=="mali*", MODE="0660", GROUP="video"
