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Commit 8d3d462b authored by Wei Ni's avatar Wei Ni Committed by Eduardo Valentin
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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: default avatarWei Ni <wni@nvidia.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 4a04beb1

Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt

+25 −0
Original line number Diff line number Diff line
@@ -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>;

                        };

		};

	};