[PATCH 5/5] ARM: dts: exynos4412-trats2: Add ADC's dt data to get temperature of SoC/battery
From: cw00.choi@samsung.com (Chanwoo Choi)
Date: 2014-03-11 07:56:11
Also in:
linux-devicetree, linux-samsung-soc, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
This patch use ADC to get the temperature of SoC/battery by using NTC thermistor driver in hwmon. NTC thermistor driver covnvert ADC's raw data to temperature by using following variables: - pullup-uv : Voltage - pullup-ohm : Pull-up resistance - pulldown-ohm : Pull-down resistance - io-channels : It means ADC channel. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> --- arch/arm/boot/dts/exynos4412-trats2.dts | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
index 4f851cc..fc517c3 100644
--- a/arch/arm/boot/dts/exynos4412-trats2.dts
+++ b/arch/arm/boot/dts/exynos4412-trats2.dts@@ -106,6 +106,27 @@ }; }; + adc: adc at 126C0000 { + vdd-supply = <&ldo3_reg>; + status = "okay"; + + ncp15wb473 at 0 { + compatible = "ntc,ncp15wb473"; + pullup-uv = <1800000>; /* VCC_1.8V_AP */ + pullup-ohm = <100000>; /* 100K */ + pulldown-ohm = <100000>; /* 100K */ + io-channels = <&adc 1>; /* AP temperature */ + }; + + ncp15wb473 at 1 { + compatible = "ntc,ncp15wb473"; + pullup-uv = <1800000>; /* VCC_1.8V_AP */ + pullup-ohm = <100000>; /* 100K */ + pulldown-ohm = <100000>; /* 100K */ + io-channels = <&adc 2>; /* Battery temperature */ + }; + }; + i2c at 13890000 { samsung,i2c-sda-delay = <100>; samsung,i2c-slave-addr = <0x10>;
--
1.8.0