[PATCH 2/3] ARM: DTS: Add NTC thermistor nodes to Exynos5250 based Snow
From: Naveen Krishna Chatradhi
Date: Thu Jun 26 2014 - 08:23:13 EST
Exynos5250 based Snow board has 4 NTC thermistors to measure
temperatures at various points on the board.
IIO based ADC becomes the parent and NTC thermistors are the childs,
via the HWMON interface.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@xxxxxxxxxxx>
---
Posted earlier by Doug Anderson @ https://lkml.org/lkml/2013/3/27/453
This patch depends on (1/4 and 2/4 patches of) patchset posted
http://www.spinics.net/lists/linux-iio/msg13486.html
Which were applied on to Guenter Roeck's tree.
cat sysfs entries exported by hwmon for 4 thermistors
and verified the values on Snow.
arch/arm/boot/dts/exynos5250-snow.dts | 34 +++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index 7bd2df1..0fa7067 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -20,6 +20,40 @@
i2c104 = &i2c_104;
};
+ adc@12D10000 {
+ status = "okay";
+ vdd-supply = <&buck5_reg>;
+
+ ncp15wb473@3 {
+ compatible = "murata,ncp15wb473";
+ pullup-uv = <1800000>;
+ pullup-ohm = <47000>;
+ pulldown-ohm = <0>;
+ io-channels = <&adc 3>;
+ };
+ ncp15wb473@4 {
+ compatible = "murata,ncp15wb473";
+ pullup-uv = <1800000>;
+ pullup-ohm = <47000>;
+ pulldown-ohm = <0>;
+ io-channels = <&adc 4>;
+ };
+ ncp15wb473@5 {
+ compatible = "murata,ncp15wb473";
+ pullup-uv = <1800000>;
+ pullup-ohm = <47000>;
+ pulldown-ohm = <0>;
+ io-channels = <&adc 5>;
+ };
+ ncp15wb473@6 {
+ compatible = "murata,ncp15wb473";
+ pullup-uv = <1800000>;
+ pullup-ohm = <47000>;
+ pulldown-ohm = <0>;
+ io-channels = <&adc 6>;
+ };
+ };
+
rtc@101E0000 {
status = "okay";
};
--
1.7.9.5
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