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Update asic_thermal_monitoring_hld.md #1841

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Update asic_thermal_monitoring_hld.md #1841

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14 changes: 14 additions & 0 deletions doc/asic_thermal_monitoring_hld.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,8 @@ Rev | Rev Date | Author | Change Description
|v0.1 |01/10/2019 |Padmanabhan Narayanan | Initial version
|v0.2 |10/07/2020 |Padmanabhan Narayanan | Update based on review comments and addess Multi ASIC scenario.
|v0.3 |10/15/2020 |Padmanabhan Narayanan | Update Section 6.3 to indicate no change in thermalctld or Platform API definitions.
|v0.4 |10/29/2024 |Judy Joseph | Add section 6.3.1 to propose a way to generate the asic_sensor config in DB


## 2. Scope
ASICs typically have multiple internal thermal sensors. This document describes the high level design of a poller for ASIC thermal sensors. It details how the poller may be configured and the export of thermal values from SAI to the state DB.
Expand Down Expand Up @@ -113,6 +115,18 @@ The implementation of the APIs get_high_threshold(), get_low_threshold(), get_hi

The thermalctld's TemperatureUpdater::_refresh_temperature_status() retreives the temperatures of the ASIC internal sensors from the get_temperature() API - just as it would for any external sensor. Only that in the case of ASIC internal sensors, the get_temperature() API is going to retrieve and return the value from from ASIC_TEMPERATURE_INFO table. The thermalctld also updates these values to the TEMPERATURE_INFO table in the globalDB's stateDB. Thus, there is no change in the existing thermalctld infrastructure.

#### 6.3.1 Generate the config in the config_db

Platform owners can define the following in the respective platform.json file, which could be parsed during config load_minigraph/reload to push the ASIC_SENSORS ConfigDB table entry in the DB

```
"asic_sensors": {
"poll_interval": "10",
"poll_admin_status": "enable"
}
```


## 7 Virtual Switch

NA
Expand Down