ARM: dts: rockchip: enable saradc for rk3288-evb

saradc in rk3288-evb use 1.8v ref.

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi b/arch/arm/boot/dts/rk3288-evb.dtsi
index f226ca7..f549f91 100644 (file)
--- a/arch/arm/boot/dts/rk3288-evb.dtsi
+++ b/arch/arm/boot/dts/rk3288-evb.dtsi
@@ -218,6 +218,11 @@
        status = "okay";
 };
 
+&saradc {
+       vref-supply = <&vcc_18>;
+       status = "okay";
+};
+
 &sdmmc {
        bus-width = <4>;
        cap-mmc-highspeed;