From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Ni Subject: [RFC PATCH 8/9] ARM: dt: t30 cardhu: add dt entry for thermal driver Date: Mon, 18 Feb 2013 19:30:30 +0800 Message-ID: <1361187031-3679-9-git-send-email-wni@nvidia.com> References: <1361187031-3679-1-git-send-email-wni@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1361187031-3679-1-git-send-email-wni-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: durgadoss.r-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, rui.zhang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, MLongnecker-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lm-sensors-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org, linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TZX6JHB/w77yyCwEArCW2h5@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Wei Ni List-Id: devicetree@vger.kernel.org Enable thermal driver in the dts file. Set sensor as lm90 remote sensor, and set throttle data. Signed-off-by: Wei Ni --- .../devicetree/bindings/thermal/tegra3-thermal.txt | 41 ++++++++++++++++++++ arch/arm/boot/dts/tegra30-cardhu.dtsi | 19 +++++++++ 2 files changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/tegra3-thermal.txt diff --git a/Documentation/devicetree/bindings/thermal/tegra3-thermal.txt b/Documentation/devicetree/bindings/thermal/tegra3-thermal.txt new file mode 100644 index 0000000..dc3f922 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/tegra3-thermal.txt @@ -0,0 +1,41 @@ +* Nvidia Tegra30 Thermal + +** Thermal node properties: + +- compatible : "nvidia,tegra30-thermal"; +- sensors: the sensor device node which we want to use in the thermal zone, + the arguments is the index of the sensor in sensor device node; +- passive-delay: passive delay; +- num-passive-trips : number of passive trip points, this is required, set + it 0 if none, if greater than 0, the following properties must be defined; +- passive-trips : temperature of passive trip points; +- num-active-trips: number of active trip points, this is required, set + it 0 if none, if greater than 0, the following properties must be defined; +- active-trips: temperature of active trip points; +- throt-tab-size: size of the throttle table, it's the max cooling state. +- throt-tab: throttle table. the cooling state will be defined according to + this table. + +Usually these properties are separated in board related dts files. + +Example: +thermal { + compatible = "nvidia,tegra30-thermal"; + sensors = <&nct1008 0>; + passive-delay = <2000>; + num-passive-trips = <3>; + passive-trips = <70 80 90>; + num-active-trips = <4>; + active-trips = < 60 70 80 90>; + throt-tab-size = <10>; + throt-tab = <0 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 760000 1050 + 760000 1050 + 1000000 1050 + 1000000 1050>; +}; diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi index 3f6ab89..9748b9b 100644 --- a/arch/arm/boot/dts/tegra30-cardhu.dtsi +++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi @@ -492,4 +492,23 @@ nvidia,spkr-en-gpios = <&wm8903 2 0>; nvidia,hp-det-gpios = <&gpio 178 0>; /* gpio PW2 */ }; + + thermal { + compatible = "nvidia,tegra30-thermal"; + sensors = <&nct1008 0>; + passive-delay = <2000>; + num-passive-trips = <1>; + passive-trips = <80>; + throt-tab-size = <10>; + throt-tab = <0 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 640000 1000 + 760000 1050 + 760000 1050 + 1000000 1050 + 1000000 1050>; + }; }; -- 1.7.9.5