ARM: dts: Add thermistor dts fragment used by exynos based Peach boards

This patch creates a thermistor fragment carrying the NTC
Thermistor nodes as children of the IIO based ADC.

This fragment is included in exynos5420-peach-pit.dts and
exynos5800-peach-pi.dts.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

3 files changed, 56 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/cros-adc-thermistors.dtsi b/arch/arm/boot/dts/cros-adc-thermistors.dtsi
new file mode 100644
index 000000000000..acd4fe1833f2
--- /dev/null
+++ b/arch/arm/boot/dts/cros-adc-thermistors.dtsi
@@ -0,0 +1,44 @@
+/*
+ * Thermistor dts fragment for devices that use Thermistors as
+ * children of the IIO based ADC.
+ *
+ * Currently, used by Exynos5420 based Peach PIT and
+ * Exynos5800 based Peach PI.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+&adc {
+        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>;
+        };
+};
diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index 88f16205b43c..07115b7b6ba5 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -103,6 +103,11 @@
         };
 };
 
+&adc {
+        status = "okay";
+        vdd-supply = <&ldo9_reg>;
+};
+
 &dp {
         status = "okay";
         pinctrl-names = "default";
@@ -813,3 +818,4 @@
 };
 
 #include "cros-ec-keyboard.dtsi"
+#include "cros-adc-thermistors.dtsi"
diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts
index 7c2095bbcf68..1c128e173b89 100644
--- a/arch/arm/boot/dts/exynos5800-peach-pi.dts
+++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts
@@ -101,6 +101,11 @@
         };
 };
 
+&adc {
+        status = "okay";
+        vdd-supply = <&ldo9_reg>;
+};
+
 &dp {
         status = "okay";
         pinctrl-names = "default";
@@ -811,3 +816,4 @@
 };
 
 #include "cros-ec-keyboard.dtsi"
+#include "cros-adc-thermistors.dtsi"