defined as gpio sub-nodes of the pinmux controller.
 
 Required properties for iomux controller:
-  - compatible: one of "rockchip,rk2928-pinctrl", "rockchip,rk3066a-pinctrl"
-                      "rockchip,rk3066b-pinctrl", "rockchip,rk3188-pinctrl"
-                      "rockchip,rk3228-pinctrl", "rockchip,rk3288-pinctrl"
-                      "rockchip,rk3368-pinctrl", "rockchip,rk3399-pinctrl"
+  - compatible: one of "rockchip,rk1108-pinctrl", "rockchip,rk2928-pinctrl"
+                      "rockchip,rk3066a-pinctrl", "rockchip,rk3066b-pinctrl"
+                      "rockchip,rk3188-pinctrl", "rockchip,rk3228-pinctrl"
+                      "rockchip,rk3288-pinctrl", "rockchip,rk3368-pinctrl"
+                      "rockchip,rk3399-pinctrl"
   - rockchip,grf: phandle referencing a syscon providing the
         "general register files"