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menuconfig MAILBOX
bool "Mailbox Hardware Support"
help
Mailbox is a framework to control hardware communication between
on-chip processors through queued messages and interrupt driven
signals. Say Y if your platform supports hardware mailboxes.
if MAILBOX
config ARM_MHU_MBOX
bool "ARM Message Handling Unit (MHU) Mailbox"
help
This driver provides support for inter-processor communication
between System Control Processor (SCP) with Cortex-M3 processor
and Application Processors (AP) on some ARM based systems with
MHU peripheral.
SCP controls most of the power managament on the Application
Processors. It offers control and management of: the core/cluster
power states, various power domain DVFS including the core/cluster,
certain system clocks configuration, thermal sensors and many
others.
config ARM_SCPI_PROTOCOL
bool "ARM System Control and Power Interface (SCPI) Message Protocol"
select ARM_MHU_MBOX
help
System Control and Power Interface (SCPI) Message Protocol is
defined for the purpose of communication between the Application
Cores(AP) and the System Control Processor(SCP). The MHU peripheral
provides a mechanism for inter-processor communication between SCP
and AP.
This protocol library provides interface for all the client drivers
making use of the features offered by the SCP.
config PL320_MBOX
bool "ARM PL320 Mailbox"
depends on ARM_AMBA
help
An implementation of the ARM PL320 Interprocessor Communication
Mailbox (IPCM), tailored for the Calxeda Highbank. It is used to
send short messages between Highbank's A9 cores and the EnergyCore
Management Engine, primarily for cpufreq. Say Y here if you want
to use the PL320 IPCM support.
config OMAP2PLUS_MBOX
tristate "OMAP2+ Mailbox framework support"
depends on ARCH_OMAP2PLUS
help
Mailbox implementation for OMAP family chips with hardware for
interprocessor communication involving DSP, IVA1.0 and IVA2 in
OMAP2/3; or IPU, IVA HD and DSP in OMAP4/5. Say Y here if you
want to use OMAP2+ Mailbox framework support.
config OMAP_MBOX_KFIFO_SIZE
int "Mailbox kfifo default buffer size (bytes)"
depends on OMAP2PLUS_MBOX
default 256
help
Specify the default size of mailbox's kfifo buffers (bytes).
This can also be changed at runtime (via the mbox_kfifo_size
module parameter).
config PCC
bool "Platform Communication Channel Driver"
depends on ACPI
help
ACPI 5.0+ spec defines a generic mode of communication
between the OS and a platform such as the BMC. This medium
(PCC) is typically used by CPPC (ACPI CPU Performance management),
RAS (ACPI reliability protocol) and MPST (ACPI Memory power
states). Select this driver if your platform implements the
PCC clients mentioned above.
endif
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