Hello Naveen, On Wed, Jun 25, 2014 at 8:29 AM, Naveen Krishna Chatradhi <ch.naveen@xxxxxxxxxxx> wrote: > Exynos5420 based Peach PIT 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> > Cc: Doug Anderson <dianders@xxxxxxxxxxxx> > --- > Changes since v1: > 1. Arranged the ADC node alphabetical > 2. Added "status = "okay"" to the ADC node > > This patch needs > 1. MAX77802 PMIC device tree nodes (for ldo9) > https://www.mail-archive.com/devicetree@xxxxxxxxxxxxxxx/msg31430.html > 2. Uses the DT documentation for NTC thermistors updated with vendor-prefix > > This patch set is tested > 1. On Peach PIT board via sysfs entry exposed by hwmon > localhost ~ # cat /sys/class/hwmon/hwmon*/device/temp1_input > 37436 > 36449 > 38560 > 38059 > > 2. Backward compatibility is tested by replacing "murata" with "ntc" > in the dts nodes and running the above test. > > arch/arm/boot/dts/exynos5420-peach-pit.dts | 34 ++++++++++++++++++++++++++++ > 1 file changed, 34 insertions(+) > > diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts > index b96a66a..19d733d 100644 > --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts > +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts > @@ -101,6 +101,40 @@ > }; > }; > > +&adc { > + status = "okay"; > + vdd-supply = <&ldo9_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>; > + }; > +}; > + > &dp { > status = "okay"; > pinctrl-names = "default"; > -- > 1.7.9.5 > Tested-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx> -- 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
