| Etienne Carriere | 02fd126 | 2020-09-09 18:44:00 +0200 | [diff] [blame] | 1 | config SCMI_FIRMWARE |
| 2 | bool "Enable SCMI support" |
| 3 | select FIRMWARE |
| 4 | select OF_TRANSLATE |
| Etienne Carriere | a26d0ec | 2020-09-09 18:44:02 +0200 | [diff] [blame] | 5 | depends on SANDBOX || DM_MAILBOX || ARM_SMCCC |
| Etienne Carriere | 02fd126 | 2020-09-09 18:44:00 +0200 | [diff] [blame] | 6 | help |
| 7 | System Control and Management Interface (SCMI) is a communication |
| 8 | protocol that defines standard interfaces for power, performance |
| 9 | and system management. The SCMI specification is available at |
| 10 | https://developer.arm.com/architectures/system-architectures/software-standards/scmi |
| 11 | |
| 12 | An SCMI agent communicates with a related SCMI server firmware |
| 13 | located in another sub-system, as a companion micro controller |
| 14 | or a companion host in the CPU system. |
| 15 | |
| 16 | Communications between agent (client) and the SCMI server are |
| Etienne Carriere | 2b41208 | 2020-09-09 18:44:01 +0200 | [diff] [blame] | 17 | based on message exchange. Messages can be exchange over tranport |
| Etienne Carriere | a26d0ec | 2020-09-09 18:44:02 +0200 | [diff] [blame] | 18 | channels as a mailbox device or an Arm SMCCC service with some |
| 19 | piece of identified shared memory. |