menu "Mailbox Controller Support" config DM_MAILBOX bool "Enable mailbox controllers using Driver Model" depends on DM && OF_CONTROL help Enable support for the mailbox driver class. Mailboxes provide the ability to transfer small messages and/or notifications from one CPU to another CPU, or sometimes to dedicated HW modules. They form the basis of a variety of inter-process/inter-CPU communication protocols. config SANDBOX_MBOX bool "Enable the sandbox mailbox test driver" depends on DM_MAILBOX && SANDBOX help Enable support for a test mailbox implementation, which simply echos back a modified version of any message that is sent. config TEGRA_HSP bool "Enable Tegra HSP controller support" depends on DM_MAILBOX && ARCH_TEGRA help This enables support for the NVIDIA Tegra HSP Hw module, which implements doorbells, mailboxes, semaphores, and shared interrupts. config STM32_IPCC bool "Enable STM32 IPCC controller support" depends on DM_MAILBOX && ARCH_STM32MP help This enables support for the STM32MP IPCC Hw module, which implements doorbells between 2 processors. config K3_SEC_PROXY bool "Texas Instruments K3 Secure Proxy Driver" depends on DM_MAILBOX && ARCH_K3 help An implementation of Secure proxy slave driver for K3 SoCs from Texas Instruments. Secure proxy is a communication entity mainly used for communication between multiple processors with the SoC. Select this driver if your platform has support for this hardware block. config ZYNQMP_IPI bool "Xilinx ZynqMP IPI controller support" depends on DM_MAILBOX && ARCH_ZYNQMP help This enables support for the Xilinx ZynqMP Inter Processor Interrupt communication controller. endmenu