The compatible string below was added to rockchip-io-domain.txt, but never added to the device tree, so add a io-domains node to rk3188.dtsi "rockchip,rk3188-io-voltage-domain" Signed-off-by: Johan Jonker <jbx6244@xxxxxxxxx> --- arch/arm/boot/dts/rk3188.dtsi | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi index b36fcdd9a..2721b7285 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -641,6 +641,11 @@ &grf{ compatible = "rockchip,rk3188-grf", "syscon", "simple-mfd"; + io_domains: io-domains { + compatible = "rockchip,rk3188-io-voltage-domain"; + status = "disabled"; + }; + usbphy: usbphy { compatible = "rockchip,rk3188-usb-phy", "rockchip,rk3288-usb-phy"; -- 2.11.0