From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: Thu, 13 Sep 2018 20:29:18 +0000 (+0200)
Subject: ARM: dts: meson8b: odroidc1: enable the SAR ADC
X-Git-Tag: v4.20-rc1~66^2~35^2~1
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=fd6643142a0c5ab4d423ed7173a0be414d509214;p=users%2Fjedix%2Flinux-maple.git

ARM: dts: meson8b: odroidc1: enable the SAR ADC

Odroid-C1 exposes ADC channels 0 and 1 on the GPIO headers. NOTE: Due
to the SoC design these are limited to 1.8V (instead of 3.3V like all
other pins).
Enable the SAR ADC to enable voltage measurements on these pins.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
---

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index a08dccccdb5e1..7c1225658567c 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -246,6 +246,11 @@
 	pinctrl-names = "default";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vcc_1v8>;
+};
+
 &sdio {
 	status = "okay";