300586778d
The pl320 IPC allows for interprocessor communication between the highbank A9 and the EnergyCore Management Engine. The pl320 implements a straightforward mailbox protocol. Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
20 lines
654 B
Plaintext
20 lines
654 B
Plaintext
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 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.
|
|
|
|
endif
|