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# SPDX-License-Identifier: GPL-2.0-only
menu "ARM System Control and Management Interface Protocol"
config ARM_SCMI_PROTOCOL
tristate "ARM System Control and Management Interface (SCMI) Message Protocol"
depends on ARM || ARM64 || COMPILE_TEST
help
ARM System Control and Management Interface (SCMI) protocol is a
set of operating system-independent software interfaces that are
used in system management. SCMI is extensible and currently provides
interfaces for: Discovery and self-description of the interfaces
it supports, Power domain management which is the ability to place
a given device or domain into the various power-saving states that
it supports, Performance management which is the ability to control
the performance of a domain that is composed of compute engines
such as application processors and other accelerators, Clock
management which is the ability to set and inquire rates on platform
managed clocks and Sensor management which is the ability to read
sensor data, and be notified of sensor value.
This protocol library provides interface for all the client drivers
making use of the features offered by the SCMI.
if ARM_SCMI_PROTOCOL
config ARM_SCMI_HAVE_TRANSPORT
bool
help
This declares whether at least one SCMI transport has been configured.
Used to trigger a build bug when trying to build SCMI without any
configured transport.
config ARM_SCMI_HAVE_SHMEM
bool
help
This declares whether a shared memory based transport for SCMI is
available.
config ARM_SCMI_HAVE_MSG
bool
help
This declares whether a message passing based transport for SCMI is
available.
config ARM_SCMI_TRANSPORT_MAILBOX
bool "SCMI transport based on Mailbox"
depends on MAILBOX
select ARM_SCMI_HAVE_TRANSPORT
select ARM_SCMI_HAVE_SHMEM
default y
help
Enable mailbox based transport for SCMI.
If you want the ARM SCMI PROTOCOL stack to include support for a
transport based on mailboxes, answer Y.
config ARM_SCMI_TRANSPORT_SMC
bool "SCMI transport based on SMC"
depends on HAVE_ARM_SMCCC_DISCOVERY
select ARM_SCMI_HAVE_TRANSPORT
select ARM_SCMI_HAVE_SHMEM
default y
help
Enable SMC based transport for SCMI.
If you want the ARM SCMI PROTOCOL stack to include support for a
transport based on SMC, answer Y.
config ARM_SCMI_TRANSPORT_VIRTIO
bool "SCMI transport based on VirtIO"
depends on VIRTIO=y || VIRTIO=ARM_SCMI_PROTOCOL
select ARM_SCMI_HAVE_TRANSPORT
select ARM_SCMI_HAVE_MSG
help
This enables the virtio based transport for SCMI.
If you want the ARM SCMI PROTOCOL stack to include support for a
transport based on VirtIO, answer Y.
endif #ARM_SCMI_PROTOCOL
config ARM_SCMI_POWER_DOMAIN
tristate "SCMI power domain driver"
depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF)
default y
select PM_GENERIC_DOMAINS if PM
help
This enables support for the SCMI power domains which can be
enabled or disabled via the SCP firmware
This driver can also be built as a module. If so, the module
will be called scmi_pm_domain. Note this may needed early in boot
before rootfs may be available.
endmenu
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