--- zzzz-none-000/linux-3.10.107/drivers/power/avs/Kconfig	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/power/avs/Kconfig	2021-02-04 17:41:59.000000000 +0000
@@ -10,3 +10,11 @@
 	  AVS is also called SmartReflex on OMAP devices.
 
 	  Say Y here to enable Adaptive Voltage Scaling class support.
+
+config ROCKCHIP_IODOMAIN
+        tristate "Rockchip IO domain support"
+        depends on POWER_AVS && ARCH_ROCKCHIP && OF
+        help
+          Say y here to enable support io domains on Rockchip SoCs. It is
+          necessary for the io domain setting of the SoC to match the
+          voltage supplied by the regulators.