diff options
Diffstat (limited to 'Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt index b6c0ae53d4dc..ab66d6feab4b 100644 --- a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt +++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt @@ -55,10 +55,21 @@ Required properties : - #cooling-cells: Should be 1. This cooling device only support on/off state. See ./thermal.txt for a description of this property. +Optional properties: +- nvidia,thermtrips : When present, this property specifies the temperature at + which the soctherm hardware will assert the thermal trigger signal to the + Power Management IC, which can be configured to reset or shutdown the device. + It is an array of pairs where each pair represents a tsensor id followed by a + temperature in milli Celcius. In the absence of this property the critical + trip point will be used for thermtrip temperature. + Note: -- the "critical" type trip points will be set to SOC_THERM hardware as the -shut down temperature. Once the temperature of this thermal zone is higher -than it, the system will be shutdown or reset by hardware. +- the "critical" type trip points will be used to set the temperature at which +the SOC_THERM hardware will assert a thermal trigger if the "nvidia,thermtrips" +property is missing. When the thermtrips property is present, the breach of a +critical trip point is reported back to the thermal framework to implement +software shutdown. + - the "hot" type trip points will be set to SOC_THERM hardware as the throttle temperature. Once the the temperature of this thermal zone is higher than it, it will trigger the HW throttle event. @@ -79,6 +90,9 @@ Example : #thermal-sensor-cells = <1>; + nvidia,thermtrips = <TEGRA124_SOCTHERM_SENSOR_CPU 102500 + TEGRA124_SOCTHERM_SENSOR_GPU 103000>; + throttle-cfgs { /* * When the "heavy" cooling device triggered, |