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>
19 lines
654 B
Text
19 lines
654 B
Text
menuconfig MAILBOX
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bool "Mailbox Hardware Support"
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help
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Mailbox is a framework to control hardware communication between
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on-chip processors through queued messages and interrupt driven
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signals. Say Y if your platform supports hardware mailboxes.
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if MAILBOX
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config PL320_MBOX
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bool "ARM PL320 Mailbox"
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depends on ARM_AMBA
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help
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An implementation of the ARM PL320 Interprocessor Communication
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Mailbox (IPCM), tailored for the Calxeda Highbank. It is used to
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send short messages between Highbank's A9 cores and the EnergyCore
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Management Engine, primarily for cpufreq. Say Y here if you want
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to use the PL320 IPCM support.
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endif
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