diff options
| author | Wei Ni <wni@nvidia.com> | 2019-02-21 18:18:46 +0800 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2019-05-13 20:35:34 -0700 |
| commit | 8d3d462b684a064a45e68b64d40e9937966802d9 (patch) | |
| tree | 187591b59cc5fa65d6bf9e77e62491c39849979c /Documentation/devicetree | |
| parent | 4a04beb1bf2ef75945f293bb65ac46f41e818497 (diff) | |
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>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt index cf6d0be56b7a..f02f38527a6b 100644 --- a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt +++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt @@ -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>; + }; }; }; |