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{{ApplicableFor | |||
{{ | |MPUs list=STM32MP13x, STM32MP15x, STM32MP21x, STM32MP23x, STM32MP25x | ||
|MPUs checklist=STM32MP13x, STM32MP15x, STM32MP21x, STM32MP23x, STM32MP25x | |||
}} | |||
==Article purpose== | |||
The purpose of this article is to: | |||
* briefly introduce the DTS peripheral and its main features, | |||
* indicate the peripheral instances assignment at boot time and their assignment at runtime (including whether instances can be allocated to secure contexts), | |||
* list the software frameworks and drivers managing the peripheral, | |||
* explain how to configure the peripheral. | |||
==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. | The '''Digital temperature sensor (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. | ||
Refer to the [[STM32 MPU resources#Reference manuals|STM32 MPU reference manuals]] for the complete list of features, and to the software frameworks and drivers, introduced below, to see which features are implemented. | |||
Refer to the [[ | |||
== | ==Peripheral usage== | ||
This chapter is applicable in the scope of the '''OpenSTLinux BSP''' running on the Arm<sup>®</sup> Cortex<sup>®</sup>-A processor(s), and the '''STM32CubeMPU Package''' running on the Arm<sup>®</sup> Cortex<sup>®</sup>-M processor. | |||
== | ===Boot time assignment=== | ||
=== | ====On {{MicroprocessorDevice | device=1}}==== | ||
DTS is not used at boot time. | The DTS peripheral is not used at boot time. | ||
=== | ====On {{MicroprocessorDevice | device=2}}==== | ||
=== | |||
==== | {{#lst:STM32MP2_internal_peripherals_assignment_table_template|stm32mp2_a35_boottime}} | ||
{{: | <section begin=stm32mp21_a35_boottime/><section begin=stm32mp23_a35_boottime/><section begin=stm32mp25_a35_boottime/> | ||
| Power & Thermal | | rowspan="1" | Power & Thermal | ||
| [[DTS internal peripheral|DTS]] | | rowspan="1" | [[DTS internal peripheral | DTS]] | ||
| | | DTS | ||
| | | | ||
| | | | ||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span> | |||
| | |||
|- | |||
<section end=stm32mp21_a35_boottime/><section end=stm32mp23_a35_boottime/><section end=stm32mp25_a35_boottime/> | |||
|} | |||
===Runtime assignment=== | |||
====On {{MicroprocessorDevice | device=13}}==== | |||
{{#lst:STM32MP1_internal_peripherals_assignment_table_template|stm32mp13_runtime}} | |||
<section begin=stm32mp13_runtime /> | |||
| rowspan="1" | Power & Thermal | |||
| rowspan="1" | [[DTS internal peripheral|DTS]] | |||
| DTS | |||
| | |||
| <span title="assignable peripheral" style="font-size:21px">☐</span> | |||
| | | | ||
|- | |- | ||
<section end=stm32mp13_runtime /> | |||
|} | |||
==== | ====On {{MicroprocessorDevice | device=15}}==== | ||
{{#lst:STM32MP1_internal_peripherals_assignment_table_template|stm32mp15_runtime}} | |||
<section begin=stm32mp15_runtime /> | |||
{{: | |||
< | |||
| rowspan="1" | Power & Thermal | | rowspan="1" | Power & Thermal | ||
| rowspan="1" | [[DTS internal peripheral|DTS]] | | rowspan="1" | [[DTS internal peripheral|DTS]] | ||
Line 48: | Line 62: | ||
| | | | ||
|- | |- | ||
</ | <section end=stm32mp15_runtime /> | ||
|} | |||
== | ====On {{MicroprocessorDevice | device=21}}==== | ||
< | {{#lst:STM32MP2_internal_peripherals_assignment_table_template|stm32mp21_runtime}} | ||
<section begin=stm32mp21_a35_runtime /> | |||
| rowspan="1" | Power & Thermal | |||
| rowspan="1" | [[DTS internal peripheral | DTS]] | |||
| DTS | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span><sup>OP-TEE</sup> | |||
| <span title="assignable peripheral" style="font-size:21px">☐</span> | |||
| | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span> | |||
| | |||
|- | |||
<section end=stm32mp21_a35_runtime /> | |||
|} | |||
====On {{MicroprocessorDevice | device=23}}==== | |||
{{#lst:STM32MP2_internal_peripherals_assignment_table_template|stm32mp23_runtime}} | |||
<section begin=stm32mp23_a35_runtime /> | |||
| rowspan="1" | Power & Thermal | |||
| rowspan="1" | [[DTS internal peripheral | DTS]] | |||
| DTS | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span><sup>OP-TEE</sup> | |||
| <span title="assignable peripheral" style="font-size:21px">☐</span> | |||
| | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span> | |||
| | |||
|- | |||
<section end=stm32mp23_a35_runtime /> | |||
|} | |||
====On {{MicroprocessorDevice | device=25}}==== | |||
{{#lst:STM32MP2_internal_peripherals_assignment_table_template|stm32mp25_runtime}} | |||
<section begin=stm32mp25_a35_runtime /> | |||
| rowspan="1" | Power & Thermal | |||
| rowspan="1" | [[DTS internal peripheral | DTS]] | |||
| DTS | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span><sup>OP-TEE</sup> | |||
| <span title="assignable peripheral" style="font-size:21px">☐</span> | |||
| | |||
| <span title="assignable peripheral but not supported" style="font-size:21px">⬚</span> | |||
| | |||
| | |||
|- | |||
<section end=stm32mp25_a35_runtime /> | |||
|} | |||
==Software frameworks and drivers== | |||
Below are listed the software frameworks and drivers managing the {{Green|DTS}} peripheral for the embedded software components listed in the above tables. | |||
* '''Linux<sup>®</sup>''': [[Thermal overview|thermal framework]] | |||
==How to assign and configure the peripheral== | |||
The peripheral assignment can be done via the [[STM32CubeMX]] graphical tool (and manually completed if needed).<br /> | |||
This tool also helps to configure the peripheral: | |||
* partial device trees (pin control and clock tree) generation for the OpenSTLinux software components, | |||
* HAL initialization code generation for the STM32CubeMPU Package. | |||
The configuration is applied by the firmware running in the context in which the peripheral is assigned. | |||
<noinclude> | |||
[[Category:Power and Thermal peripherals]] | |||
{{ArticleBasedOnModel| Internal peripheral article model}} | |||
{{PublicationRequestId | 8855 | 2018-09-21 | BrunoB}} | |||
</noinclude> |
Latest revision as of 20:32, 7 November 2024
1. Article purpose[edit | edit source]
The purpose of this article is to:
- briefly introduce the DTS peripheral and its main features,
- indicate the peripheral instances assignment at boot time and their assignment at runtime (including whether instances can be allocated to secure contexts),
- list the software frameworks and drivers managing the peripheral,
- explain how to configure the peripheral.
2. Peripheral overview[edit | edit source]
The Digital temperature sensor (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.
Refer to the STM32 MPU reference manuals for the complete list of features, and to the software frameworks and drivers, introduced below, to see which features are implemented.
3. Peripheral usage[edit | edit source]
This chapter is applicable in the scope of the OpenSTLinux BSP running on the Arm® Cortex®-A processor(s), and the STM32CubeMPU Package running on the Arm® Cortex®-M processor.
3.1. Boot time assignment[edit | edit source]
3.1.1. On STM32MP1 series[edit | edit source]
The DTS peripheral is not used at boot time.
3.1.2. On STM32MP2 series[edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Boot time allocation | Comment | |||
---|---|---|---|---|---|---|
Instance | Cortex-A35 secure (ROM code) |
Cortex-A35 secure (TF-A BL2) |
Cortex-A35 nonsecure (U-Boot) | |||
Power & Thermal | DTS | DTS | ⬚ |
3.2. Runtime assignment[edit | edit source]
3.2.1. On STM32MP13x lines [edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Runtime allocation | Comment | ||
---|---|---|---|---|---|
Instance | Cortex-A7 secure (OP-TEE) |
Cortex-A7 non-secure (Linux) | |||
Power & Thermal | DTS | DTS | ☐ |
3.2.2. On STM32MP15x lines [edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Runtime allocation | Comment | |||
---|---|---|---|---|---|---|
Instance | Cortex-A7 secure (OP-TEE) |
Cortex-A7 non-secure (Linux) |
Cortex-M4 (STM32Cube) | |||
Power & Thermal | DTS | DTS | ☐ |
3.2.3. On STM32MP21x lines [edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Runtime allocation | Comment | ||||
---|---|---|---|---|---|---|---|
Instance | Cortex-A35 secure (OP-TEE / TF-A BL31) |
Cortex-A35 nonsecure (Linux) |
Cortex-M33 secure (TF-M) |
Cortex-M33 nonsecure (STM32Cube) | |||
Power & Thermal | DTS | DTS | ⬚OP-TEE | ☐ | ⬚ |
3.2.4. On STM32MP23x lines [edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Runtime allocation | Comment | ||||
---|---|---|---|---|---|---|---|
Instance | Cortex-A35 secure (OP-TEE / TF-A BL31) |
Cortex-A35 nonsecure (Linux) |
Cortex-M33 secure (TF-M) |
Cortex-M33 nonsecure (STM32Cube) | |||
Power & Thermal | DTS | DTS | ⬚OP-TEE | ☐ | ⬚ |
3.2.5. On STM32MP25x lines [edit | edit source]
Click on to expand or collapse the legend...
Domain | Peripheral | Runtime allocation | Comment | |||||
---|---|---|---|---|---|---|---|---|
Instance | Cortex-A35 secure (OP-TEE / TF-A BL31) |
Cortex-A35 nonsecure (Linux) |
Cortex-M33 secure (TF-M) |
Cortex-M33 nonsecure (STM32Cube) |
Cortex-M0+ (STM32Cube) | |||
Power & Thermal | DTS | DTS | ⬚OP-TEE | ☐ | ⬚ |
4. Software frameworks and drivers[edit | edit source]
Below are listed the software frameworks and drivers managing the DTS peripheral for the embedded software components listed in the above tables.
- Linux®: thermal framework
5. How to assign and configure the peripheral[edit | edit source]
The peripheral assignment can be done via the STM32CubeMX graphical tool (and manually completed if needed).
This tool also helps to configure the peripheral:
- partial device trees (pin control and clock tree) generation for the OpenSTLinux software components,
- HAL initialization code generation for the STM32CubeMPU Package.
The configuration is applied by the firmware running in the context in which the peripheral is assigned. Template:ArticleBasedOnModel