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Commit 30058677 authored by Rob Herring's avatar Rob Herring Committed by Rafael J. Wysocki
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ARM / highbank: add support for pl320 IPC 



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: default avatarMark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent b5964708

arch/arm/mach-highbank/Kconfig

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@@ -11,5 +11,7 @@ config ARCH_HIGHBANK 
	select GENERIC_CLOCKEVENTS

	select HAVE_ARM_SCU

	select HAVE_SMP

	select MAILBOX

	select PL320_MBOX

	select SPARSE_IRQ

	select USE_OF

drivers/Kconfig

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@@ -134,6 +134,8 @@ source "drivers/hwspinlock/Kconfig" 


source "drivers/clocksource/Kconfig"



source "drivers/mailbox/Kconfig"



source "drivers/iommu/Kconfig"



source "drivers/remoteproc/Kconfig"

drivers/Makefile

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@@ -130,6 +130,7 @@ obj-y += platform/ 
#common clk code

obj-y				+= clk/



obj-$(CONFIG_MAILBOX)		+= mailbox/

obj-$(CONFIG_HWSPINLOCK)	+= hwspinlock/

obj-$(CONFIG_NFC)		+= nfc/

obj-$(CONFIG_IOMMU_SUPPORT)	+= iommu/

drivers/mailbox/Kconfig

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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 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

drivers/mailbox/Makefile

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obj-$(CONFIG_PL320_MBOX)	+= pl320-ipc.o