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mailbox: arm_mhuv3: Add driver

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Add support for ARM MHUv3 mailbox controller.

Support is limited to the MHUv3 Doorbell extension using only the PBX/MBX
combined interrupts.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
This commit is contained in:
Cristian Marussi 2024-04-18 11:52:10 +01:00 committed by Jassi Brar
parent cd251970b1
commit ca1a8680b1
4 changed files with 1126 additions and 0 deletions
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9
MAINTAINERS
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@ -12994,6 +12994,15 @@ F: Documentation/devicetree/bindings/mailbox/arm,mhuv2.yaml
F: drivers/mailbox/arm_mhuv2.c
F: include/linux/mailbox/arm_mhuv2_message.h
MAILBOX ARM MHUv3
M: Sudeep Holla <sudeep.holla@arm.com>
M: Cristian Marussi <cristian.marussi@arm.com>
L: linux-kernel@vger.kernel.org
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/mailbox/arm,mhuv3.yaml
F: drivers/mailbox/arm_mhuv3.c
MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7
M: Alejandro Colomar <alx@kernel.org>
L: linux-man@vger.kernel.org

12
drivers/mailbox/Kconfig
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@ -23,6 +23,18 @@ config ARM_MHU_V2
Say Y here if you want to build the ARM MHUv2 controller driver,
which provides unidirectional mailboxes between processing elements.
config ARM_MHU_V3
tristate "ARM MHUv3 Mailbox"
depends on HAS_IOMEM || COMPILE_TEST
depends on OF
help
Say Y here if you want to build the ARM MHUv3 controller driver,
which provides unidirectional mailboxes between processing elements.
ARM MHUv3 controllers can implement a varying number of extensions
that provides different means of transports: supported extensions
will be discovered and possibly managed at probe-time.
config IMX_MBOX
tristate "i.MX Mailbox"
depends on ARCH_MXC || COMPILE_TEST

2
drivers/mailbox/Makefile
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@ -9,6 +9,8 @@ obj-$(CONFIG_ARM_MHU) += arm_mhu.o arm_mhu_db.o
obj-$(CONFIG_ARM_MHU_V2) += arm_mhuv2.o
obj-$(CONFIG_ARM_MHU_V3) += arm_mhuv3.o
obj-$(CONFIG_IMX_MBOX) += imx-mailbox.o
obj-$(CONFIG_ARMADA_37XX_RWTM_MBOX) += armada-37xx-rwtm-mailbox.o

1103
drivers/mailbox/arm_mhuv3.c Normal file
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