[PATCH AUTOSEL 4.19 130/191] ARM: dts: meson8b: odroidc1: enable the SAR ADC

* [PATCH AUTOSEL 4.19 130/191] ARM: dts: meson8b: odroidc1: enable the SAR ADC
       [not found] <20191110024013.29782-1-sashal@kernel.org>
@ 2019-11-10  2:39 ` Sasha Levin
  0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-11-10  2:39 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Martin Blumenstingl, Kevin Hilman, devicetree, linux-amlogic,
	Sasha Levin

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

[ Upstream commit fd6643142a0c5ab4d423ed7173a0be414d509214 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/meson8b-odroidc1.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index 8fdeeffecbdbc..8a09071d712a5 100644
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -153,6 +153,11 @@
 	pinctrl-names = "default";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vcc_1v8>;
+};
+
 &sdio {
 	status = "okay";
 
-- 
2.20.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

^ permalink raw reply	[flat|nested] only message in thread