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of: Add bindings of OC hw throttle for Tegra soctherm

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Add OC HW throttle configuration for soctherm in DT.
It is used to describe the OCx throttle events.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
This commit is contained in:
Wei Ni 2019-02-21 18:18:46 +08:00 committed by Eduardo Valentin
parent 4a04beb1bf
commit 8d3d462b68
1 changed files with 25 additions and 0 deletions
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Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt
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@ -64,6 +64,20 @@ Required properties :
- #cooling-cells: Should be 1. This cooling device only support on/off state. - #cooling-cells: Should be 1. This cooling device only support on/off state.
See ./thermal.txt for a description of this property. See ./thermal.txt for a description of this property.
Optional properties: The following properties are T210 specific and
valid only for OCx throttle events.
- nvidia,count-threshold: Specifies the number of OC events that are
required for triggering an interrupt. Interrupts are not triggered if
the property is missing. A value of 0 will interrupt on every OC alarm.
- nvidia,polarity-active-low: Configures the polarity of the OC alaram
signal. If present, this means assert low, otherwise assert high.
- nvidia,alarm-filter: Number of clocks to filter event. When the filter
expires (which means the OC event has not occurred for a long time),
the counter is cleared and filter is rearmed. Default value is 0.
- nvidia,throttle-period-us: Specifies the number of uSec for which
throttling is engaged after the OC event is deasserted. Default value
is 0.
Optional properties: Optional properties:
- nvidia,thermtrips : When present, this property specifies the temperature at - nvidia,thermtrips : When present, this property specifies the temperature at
which the soctherm hardware will assert the thermal trigger signal to the which the soctherm hardware will assert the thermal trigger signal to the
@ -134,6 +148,17 @@ Example :
* arbiter will select the highest priority as the final throttle * arbiter will select the highest priority as the final throttle
* settings to skip cpu pulse. * settings to skip cpu pulse.
*/ */
throttle_oc1: oc1 {
nvidia,priority = <50>;
nvidia,polarity-active-low;
nvidia,count-threshold = <100>;
nvidia,alarm-filter = <5100000>;
nvidia,throttle-period-us = <0>;
nvidia,cpu-throt-percent = <75>;
nvidia,gpu-throt-level =
<TEGRA_SOCTHERM_THROT_LEVEL_MED>;
};
}; };
}; };