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of: Add bindings for nvidia,tegra124-soctherm

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This adds binding documentation and headers for the Tegra124
SOCTHERM device tree node.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Mikko Perttunen 2014-09-26 12:43:10 +03:00 committed by Eduardo Valentin
parent f9df89d897
commit 0199e9938f
2 changed files with 66 additions and 0 deletions
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Documentation/devicetree/bindings/thermal/tegra-soctherm.txt Normal file
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Tegra124 SOCTHERM thermal management system
The SOCTHERM IP block contains thermal sensors, support for polled
or interrupt-based thermal monitoring, CPU and GPU throttling based
on temperature trip points, and handling external overcurrent
notifications. It is also used to manage emergency shutdown in an
overheating situation.
Required properties :
- compatible : "nvidia,tegra124-soctherm".
- reg : Should contain 1 entry:
- SOCTHERM register set
- interrupts : Defines the interrupt used by SOCTHERM
- clocks : Must contain an entry for each entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names : Must include the following entries:
- tsensor
- soctherm
- resets : Must contain an entry for each entry in reset-names.
See ../reset/reset.txt for details.
- reset-names : Must include the following entries:
- soctherm
- #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description
of this property. See <dt-bindings/thermal/tegra124-soctherm.h> for a
list of valid values when referring to thermal sensors.
Example :
soctherm@0,700e2000 {
compatible = "nvidia,tegra124-soctherm";
reg = <0x0 0x700e2000 0x0 0x1000>;
interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&tegra_car TEGRA124_CLK_TSENSOR>,
<&tegra_car TEGRA124_CLK_SOC_THERM>;
clock-names = "tsensor", "soctherm";
resets = <&tegra_car 78>;
reset-names = "soctherm";
#thermal-sensor-cells = <1>;
};
Example: referring to thermal sensors :
thermal-zones {
cpu {
polling-delay-passive = <1000>;
polling-delay = <1000>;
thermal-sensors =
<&soctherm TEGRA124_SOCTHERM_SENSOR_CPU>;
};
};

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include/dt-bindings/thermal/tegra124-soctherm.h Normal file
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/*
* This header provides constants for binding nvidia,tegra124-soctherm.
*/
#ifndef _DT_BINDINGS_THERMAL_TEGRA124_SOCTHERM_H
#define _DT_BINDINGS_THERMAL_TEGRA124_SOCTHERM_H
#define TEGRA124_SOCTHERM_SENSOR_CPU 0
#define TEGRA124_SOCTHERM_SENSOR_MEM 1
#define TEGRA124_SOCTHERM_SENSOR_GPU 2
#define TEGRA124_SOCTHERM_SENSOR_PLLX 3
#endif