From mboxrd@z Thu Jan 1 00:00:00 1970 From: ch.naveen@samsung.com (Naveen Krishna Chatradhi) Date: Tue, 24 Jun 2014 17:49:16 +0530 Subject: [PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC In-Reply-To: <1403612356-23685-1-git-send-email-ch.naveen@samsung.com> References: <1403612356-23685-1-git-send-email-ch.naveen@samsung.com> Message-ID: <1403612356-23685-5-git-send-email-ch.naveen@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Exynos5420 based Peach PIT and Exynos5800 based PI boards have 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 Cc: Doug Anderson --- This patch needs 1. MAX77802 PMIC device tree nodes (for ldo9) https://www.mail-archive.com/devicetree at vger.kernel.org/msg31430.html 2. Uses the DT documentation for NTC thermistors updated with vendor-prefix arch/arm/boot/dts/exynos5420-peach-pit.dts | 32 ++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts index b96a66a..852a220 100644 --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -751,4 +751,36 @@ timeout-sec = <32>; }; +&adc { + vdd-supply = <&ldo9_reg>; + ncp15wb473 at 3 { + compatible = "murata,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 3>; + }; + ncp15wb473 at 4 { + compatible = "murata,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 4>; + }; + ncp15wb473 at 5 { + compatible = "murata,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 5>; + }; + ncp15wb473 at 6 { + compatible = "murata,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 6>; + }; +}; + #include "cros-ec-keyboard.dtsi" -- 1.7.9.5