[RFC PATCH 8/9] ARM: dt: t30 cardhu: add dt entry for thermal driver
From: Wei Ni <hidden>
Date: 2013-02-18 11:30:30
Also in:
linux-arm-kernel, linux-devicetree, linux-tegra
Subsystem:
open firmware and flattened device tree bindings, the rest, thermal · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
Possibly related (same subject, not in this thread)
- 2013-02-20 · Re: [RFC PATCH 8/9] ARM: dt: t30 cardhu: add dt entry for thermal driver · Stephen Warren <hidden>
- 2013-02-20 · Re: [RFC PATCH 8/9] ARM: dt: t30 cardhu: add dt entry for thermal driver · Wei Ni <hidden>
- 2013-02-19 · Re: [RFC PATCH 8/9] ARM: dt: t30 cardhu: add dt entry for thermal driver · Stephen Warren <hidden>
Enable thermal driver in the dts file. Set sensor as lm90 remote sensor, and set throttle data. Signed-off-by: Wei Ni <redacted> --- .../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>; + }; };
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1.7.9.5