| Punit Agrawal | ea98b29 | 2015-05-21 15:08:45 +0100 | [diff] [blame] | 1 | Kernel driver scpi-hwmon |
| 2 | ======================== |
| 3 | |
| 4 | Supported chips: |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 5 | |
| Punit Agrawal | ea98b29 | 2015-05-21 15:08:45 +0100 | [diff] [blame] | 6 | * Chips based on ARM System Control Processor Interface |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 7 | |
| Punit Agrawal | ea98b29 | 2015-05-21 15:08:45 +0100 | [diff] [blame] | 8 | Addresses scanned: - |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 9 | |
| Punit Agrawal | ea98b29 | 2015-05-21 15:08:45 +0100 | [diff] [blame] | 10 | Datasheet: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0922b/index.html |
| 11 | |
| 12 | Author: Punit Agrawal <punit.agrawal@arm.com> |
| 13 | |
| 14 | Description |
| 15 | ----------- |
| 16 | |
| 17 | This driver supports hardware monitoring for SoC's based on the ARM |
| 18 | System Control Processor (SCP) implementing the System Control |
| 19 | Processor Interface (SCPI). The following sensor types are supported |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 20 | by the SCP: |
| Punit Agrawal | ea98b29 | 2015-05-21 15:08:45 +0100 | [diff] [blame] | 21 | |
| 22 | * temperature |
| 23 | * voltage |
| 24 | * current |
| 25 | * power |
| 26 | |
| 27 | The SCP interface provides an API to query the available sensors and |
| 28 | their values which are then exported to userspace by this driver. |
| 29 | |
| 30 | Usage Notes |
| 31 | ----------- |
| 32 | |
| 33 | The driver relies on device tree node to indicate the presence of SCPI |
| 34 | support in the kernel. See |
| Mauro Carvalho Chehab | 04fecf0 | 2021-07-22 11:59:59 +0200 | [diff] [blame] | 35 | Documentation/devicetree/bindings/firmware/arm,scpi.yaml for details of the |
| Mauro Carvalho Chehab | b04f2f7 | 2019-04-17 06:46:28 -0300 | [diff] [blame] | 36 | devicetree node. |