Difference between revisions of "DTS internal peripheral"

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m (→‎Peripheral assignment)
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Applicable for STM32MP13x lines, STM32MP15x lines

1 Peripheral overview[edit]

The DTS peripheral is used to monitor the device temperature and take some preventive action (like frequency scaling or peripheral disabling) in case it is becoming too high and before destroying the component.

1.1 Features[edit]

Refer to the STM32MP13 reference manuals or STM32MP15 reference manuals for the complete list of features , and to the software components, introduced below, to see which features are implemented.

1.2 Security support[edit]

The DTS is a non secure peripheral.

2 Peripheral usage and associated software[edit]

2.1 Boot time[edit]

DTS is not used at boot time.

2.2 Runtime[edit]

2.2.1 Overview[edit]

The monitoring is done from the Cortex-A7 non-secure context with Linux®thermal management framework.

2.2.2 Software frameworks[edit]

2.2.2.1 On STM32MP13x lines Warning.png[edit]
Domain Peripheral Software components Comment
OP-TEE Linux
Power & Thermal DTS Linux thermal framework
2.2.2.2 On STM32MP15x lines More info.png[edit]

Internal peripherals software table template

| Power & Thermal | DTS | | Linux thermal framework | | |- |}
Domain Peripheral Software components Comment
OP-TEE Linux STM32Cube
Power & Thermal DTS Linux thermal framework

2.2.3 Peripheral configuration[edit]

The configuration is applied by the firmware running in the context to which the peripheral is assigned. The configuration can be done alone via the STM32CubeMX tool for all internal peripherals, and then manually completed (particularly for external peripherals), according to the information given in the corresponding software framework article.

2.2.4 Peripheral assignment[edit]

2.2.4.1 On STM32MP13x lines Warning.png[edit]

Click on the right to expand the legend...

STM32MP13IPsOverview.png

Check boxes illustrate the possible peripheral allocations supported by STM32 MPU Embedded Software:

  • ☐ means that the peripheral can be assigned (☑) to the given runtime context.
  • ⬚ means that the peripheral can be assigned to the given runtime context, but this configuration is not supported in STM32 MPU Embedded Software distribution.
  • ✓ is used for system peripherals that cannot be unchecked because they are statically connected in the device.

Refer to How to assign an internal peripheral to a runtime context for more information on how to assign peripherals manually or via STM32CubeMX.
The present chapter describes STMicroelectronics recommendations or choice of implementation. Additional possiblities might be described in STM32MP13 reference manuals.

Domain Peripheral Runtime allocation Comment
Instance Cortex-A7
secure
(OP-TEE) 		Cortex-A7
non-secure
(Linux)
Power & Thermal DTS DTS ☐
2.2.4.2 On STM32MP15x lines More info.png[edit]
Internal peripherals assignment table template 
| rowspan="1" | Power & Thermal
| rowspan="1" | DTS
| DTS
|
| ☐
|
|
|-


|}

Click on the right to expand the legend...

STM32MP15 internal peripherals

Check boxes illustrate the possible peripheral allocations supported by STM32 MPU Embedded Software:

  • ☐ means that the peripheral can be assigned (☑) to the given runtime context.
  • ⬚ means that the peripheral can be assigned to the given runtime context, but this configuration is not supported in STM32 MPU Embedded Software distribution.
  • ✓ is used for system peripherals that cannot be unchecked because they are statically connected in the device.

Refer to How to assign an internal peripheral to a runtime context for more information on how to assign peripherals manually or via STM32CubeMX.
The present chapter describes STMicroelectronics recommendations or choice of implementation. Additional possiblities might be described in STM32MP15 reference manuals.

Domain Peripheral Runtime allocation Comment
Instance Cortex-A7
secure
(OP-TEE) 		Cortex-A7
non-secure
(Linux) 		Cortex-M4

(STM32Cube)
Power & Thermal DTS DTS ☐

3 References[edit] 



==<noinclude>{{ApplicableFor
|MPUs list=STM32MP13x, STM32MP15x
|MPUs checklist=STM32MP13x,STM32MP15x
}}</noinclude>

==Peripheral overview==
The '''DTS''' peripheral is used to monitor the device temperature and take some preventive action (like frequency scaling or peripheral disabling) in case it is becoming too high and before  destroying the component.<br />


===Features===
Refer to the [[STM32MP13 resources#Reference manuals|STM32MP13 reference manuals]] or [[STM32MP15 resources#Reference manuals|STM32MP15 reference manuals]] for the complete list of features , and to the software components, introduced below, to see which features are implemented.<br>


===Security support===
The DTS is  a '''non secure''' peripheral.

==Peripheral usage and associated software==
===Boot time===
DTS is not used at boot time.

===Runtime===
====Overview====
The monitoring is done from the Cortex-A7 non-secure context with Linux<sup>&reg;</sup> [[Thermal overview|thermal management framework]].

====Software frameworks====
===== On {{MicroprocessorDevice | device=13}} =====
{{:STM32MP13 internal peripherals software table template}}
 | Power & Thermal
 | [[DTS internal peripheral|DTS]]
 | 
 | [[Thermal overview|Linux thermal framework]]
 | 
 |-
 |}
===== On {{MicroprocessorDevice | device=15}} =====
{{:Internal_STM32MP15_internal_peripherals_software_table_template}}
 | Power & Thermal
 | [[DTS internal peripheral|DTS]]
 | 
 | [[Thermal overview|Linux thermal framework]]
 | 
 |
 |-
 |}

====Peripheral configuration====
The configuration is applied by the firmware running in the context to which the peripheral is assigned. The configuration can be done alone via the [[STM32CubeMX]] tool for all internal peripherals, and then manually completed (particularly for external peripherals), according to the information given in the corresponding software framework article.

====Peripheral assignment====
===== On {{MicroprocessorDevice | device=13}} =====
{{:STM32MP13_internal_peripherals_assignment_table_template}}<section begin=stm32mp13 />

 | rowspan="1" | Power & Thermal
 | rowspan="1" | [[DTS internal peripheral|DTS]]
 | DTS
 |
 | <span title="assignable peripheral" style="font-size:21px">☐</span>

 |
 |-<section end=stm32mp13 />

 |}
===== On {{MicroprocessorDevice | device=15}} =====
{{:Internal_STM32MP15_internal_peripherals_assignment_table_template}}<section begin=stm32mp15 />

 | rowspan="1" | Power & Thermal
 | rowspan="1" | [[DTS internal peripheral|DTS]]
 | DTS
 |
 | <span title="assignable peripheral" style="font-size:21px">☐</span>

 |
 |
 |-<section end=stm32mp15 />

 |}

==References==<references/>

<noinclude>

[[Category:Power and Thermal peripherals]]
{{PublicationRequestId | 8855 | 2018-09-21 | BrunoB}}
{{ArticleBasedOnModel| Internal peripheral article model}}</noinclude>
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  +
<noinclude>{{ApplicableFor
  +
|MPUs list=STM32MP13x, STM32MP15x
  +
|MPUs checklist=STM32MP13x,STM32MP15x
  +
}}</noinclude>
 
==Peripheral overview==
  
==Peripheral overview==
 
The '''DTS''' peripheral is used to monitor the device temperature and take some preventive action (like frequency scaling or peripheral disabling) in case it is becoming too high and before  destroying the component.<br />
  
The '''DTS''' peripheral is used to monitor the device temperature and take some preventive action (like frequency scaling or peripheral disabling) in case it is becoming too high and before  destroying the component.<br />
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  |}
  
  |}
 
===== On {{MicroprocessorDevice | device=15}} =====
  
===== On {{MicroprocessorDevice | device=15}} =====
−
{{:Internal_peripherals_software_table_template}}
 +
{{:STM32MP15_internal_peripherals_software_table_template}}
 
  | Power & Thermal
  
  | Power & Thermal
 
  | [[DTS internal peripheral|DTS]]
  
  | [[DTS internal peripheral|DTS]]
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  |}
  
  |}
 
===== On {{MicroprocessorDevice | device=15}} =====
  
===== On {{MicroprocessorDevice | device=15}} =====
−
{{:Internal_peripherals_assignment_table_template}}
 +
{{:STM32MP15_internal_peripherals_assignment_table_template}}
 
<section begin=stm32mp15 />
  
<section begin=stm32mp15 />
 
  | rowspan="1" | Power & Thermal
  
  | rowspan="1" | Power & Thermal
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