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mailbox: Add support for i.MX messaging unit

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The i.MX Messaging Unit is a two side block which allows applications
implement communication over this sides.

The MU includes the following features:
- Messaging control by interrupts or by polling
- Four general-purpose interrupt requests reflected to the other side
- Three general-purpose flags reflected to the other side
- Four receive registers with maskable interrupt
- Four transmit registers with maskable interrupt

Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Oleksij Rempel
2018-08-03 07:29:19 +02:00
committed by Jassi Brar
parent d6ef139c83
commit 2bb7005696
3 changed files with 366 additions and 0 deletions
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drivers/mailbox/Makefile
+2
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@@ -7,6 +7,8 @@ obj-$(CONFIG_MAILBOX_TEST) += mailbox-test.o
obj-$(CONFIG_ARM_MHU) += arm_mhu.o
obj-$(CONFIG_IMX_MBOX) += imx-mailbox.o
obj-$(CONFIG_PLATFORM_MHU) += platform_mhu.o
obj-$(CONFIG_PL320_MBOX) += pl320-ipc.o