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@xxxxxxxxxxx> --- 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@126C0000 { + vdd-supply = <&ldo3_reg>; + status = "okay"; + + ncp15wb473@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@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@13890000 { samsung,i2c-sda-delay = <100>; samsung,i2c-slave-addr = <0x10>; -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html