Mailbox is used by the Rockchip CPU cores to communicate
requests to MCU processorm.
This driver is found on RK3368 SoCs.
The Mailbox module is a simple APB peripheral that allows both
the Cortex-A53 MCU system to communicate by writing operation to
The registers are accessible by both CPU via APB interface.
Tested on RK3368 SDK board.
Caesar Wang (3):
dt-bindings: Add document of Rockchip mailbox
mailbox: rockchip: Add Rockchip mailbox driver
ARM64: dts: rk3368: Add mailbox device nodes
.../bindings/mailbox/rockchip-mailbox.txt | 33 +++
arch/arm64/boot/dts/rockchip/rk3368.dtsi | 13 +
drivers/mailbox/Kconfig | 9 +
drivers/mailbox/Makefile | 2 +
drivers/mailbox/rockchip-mailbox.c | 317 +++++++++++++++++++++
5 files changed, 374 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt
create mode 100644 drivers/mailbox/rockchip-mailbox.c