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of: Add bindings of OC hw throttle for Tegra soctherm 

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>
hifive-unleashed-5.2
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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25
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.
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:
- nvidia,thermtrips : When present, this property specifies the temperature at
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
* 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>;
};
};
};