Enable thermal driver in the dts file.
Set sensor as lm90 remote sensor, and set throttle data.
Signed-off-by: Wei Ni <wni@xxxxxxxxxx>
---
.../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
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