# SPDX-License-Identifier: GPL-2.0-only 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 ARM_MHU tristate "ARM MHU Mailbox" depends on ARM_AMBA help Say Y here if you want to build the ARM MHU controller driver. The controller has 3 mailbox channels, the last of which can be used in Secure mode only. config ARM_SMC_MBOX tristate "Generic ARM smc mailbox" depends on OF && HAVE_ARM_SMCCC help Generic mailbox driver which uses ARM smc calls to call into firmware for triggering mailboxes. config IMX_MBOX tristate "i.MX Mailbox" depends on ARCH_MXC || COMPILE_TEST help Mailbox implementation for i.MX Messaging Unit (MU). config PLATFORM_MHU tristate "Platform MHU Mailbox" depends on OF depends on HAS_IOMEM help Say Y here if you want to build a platform specific variant MHU controller driver. The controller has a maximum of 3 mailbox channels, the last of which can be used in Secure mode only. 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. config ARMADA_37XX_RWTM_MBOX tristate "Armada 37xx rWTM BIU Mailbox" depends on ARCH_MVEBU || COMPILE_TEST depends on OF help Mailbox implementation for communication with the the firmware running on the Cortex-M3 rWTM secure processor of the Armada 37xx SOC. Say Y here if you are building for such a device (for example the Turris Mox router). config OMAP2PLUS_MBOX tristate "OMAP2+ Mailbox framework support" depends on ARCH_OMAP2PLUS || ARCH_K3 help Mailbox implementation for OMAP family chips with hardware for interprocessor communication involving DSP, IVA1.0 and IVA2 in OMAP2/3; or IPU, IVA HD and DSP in OMAP4/5. Say Y here if you want to use OMAP2+ Mailbox framework support. config OMAP_MBOX_KFIFO_SIZE int "Mailbox kfifo default buffer size (bytes)" depends on OMAP2PLUS_MBOX default 256 help Specify the default size of mailbox's kfifo buffers (bytes). This can also be changed at runtime (via the mbox_kfifo_size module parameter). config ROCKCHIP_MBOX bool "Rockchip Soc Intergrated Mailbox Support" depends on ARCH_ROCKCHIP || COMPILE_TEST help This driver provides support for inter-processor communication between CPU cores and MCU processor on Some Rockchip SOCs. Please check it that the Soc you use have Mailbox hardware. Say Y here if you want to use the Rockchip Mailbox support. config PCC bool "Platform Communication Channel Driver" depends on ACPI default n help ACPI 5.0+ spec defines a generic mode of communication between the OS and a platform such as the BMC. This medium (PCC) is typically used by CPPC (ACPI CPU Performance management), RAS (ACPI reliability protocol) and MPST (ACPI Memory power states). Select this driver if your platform implements the PCC clients mentioned above. config ALTERA_MBOX tristate "Altera Mailbox" depends on HAS_IOMEM help An implementation of the Altera Mailbox soft core. It is used to send message between processors. Say Y here if you want to use the Altera mailbox support. config BCM2835_MBOX tristate "BCM2835 Mailbox" depends on ARCH_BCM2835 help An implementation of the BCM2385 Mailbox. It is used to invoke the services of the Videocore. Say Y here if you want to use the BCM2835 Mailbox. config STI_MBOX tristate "STI Mailbox framework support" depends on ARCH_STI && OF help Mailbox implementation for STMicroelectonics family chips with hardware for interprocessor communication. config TI_MESSAGE_MANAGER tristate "Texas Instruments Message Manager Driver" depends on ARCH_KEYSTONE || ARCH_K3 help An implementation of Message Manager slave driver for Keystone and K3 architecture SoCs from Texas Instruments. Message Manager is a communication entity found on few of Texas Instrument's keystone and K3 architecture SoCs. These may be used for communication between multiple processors within the SoC. Select this driver if your platform has support for the hardware block. config HI3660_MBOX tristate "Hi3660 Mailbox" if EXPERT depends on (ARCH_HISI || COMPILE_TEST) depends on OF default ARCH_HISI help An implementation of the hi3660 mailbox. It is used to send message between application processors and other processors/MCU/DSP. Select Y here if you want to use Hi3660 mailbox controller. config HI6220_MBOX tristate "Hi6220 Mailbox" if EXPERT depends on (ARCH_HISI || COMPILE_TEST) depends on OF default ARCH_HISI help An implementation of the hi6220 mailbox. It is used to send message between application processors and MCU. Say Y here if you want to build Hi6220 mailbox controller driver. config MAILBOX_TEST tristate "Mailbox Test Client" depends on OF depends on HAS_IOMEM help Test client to help with testing new Controller driver implementations. config QCOM_APCS_IPC tristate "Qualcomm APCS IPC driver" depends on ARCH_QCOM || COMPILE_TEST help Say y here to enable support for the APCS IPC mailbox driver, providing an interface for invoking the inter-process communication signals from the application processor to other masters. config TEGRA_HSP_MBOX bool "Tegra HSP (Hardware Synchronization Primitives) Driver" depends on ARCH_TEGRA help The Tegra HSP driver is used for the interprocessor communication between different remote processors and host processors on Tegra186 and later SoCs. Say Y here if you want to have this support. If unsure say N. config XGENE_SLIMPRO_MBOX tristate "APM SoC X-Gene SLIMpro Mailbox Controller" depends on ARCH_XGENE help An implementation of the APM X-Gene Interprocessor Communication Mailbox (IPCM) between the ARM 64-bit cores and SLIMpro controller. It is used to send short messages between ARM64-bit cores and the SLIMpro Management Engine, primarily for PM. Say Y here if you want to use the APM X-Gene SLIMpro IPCM support. config BCM_PDC_MBOX tristate "Broadcom FlexSparx DMA Mailbox" depends on ARCH_BCM_IPROC || COMPILE_TEST help Mailbox implementation for the Broadcom FlexSparx DMA ring manager, which provides access to various offload engines on Broadcom SoCs, including FA2/FA+ on Northstar Plus and PDC on Northstar 2. config BCM_FLEXRM_MBOX tristate "Broadcom FlexRM Mailbox" depends on ARM64 depends on ARCH_BCM_IPROC || COMPILE_TEST select GENERIC_MSI_IRQ_DOMAIN default m if ARCH_BCM_IPROC help Mailbox implementation of the Broadcom FlexRM ring manager, which provides access to various offload engines on Broadcom SoCs. Say Y here if you want to use the Broadcom FlexRM. config STM32_IPCC tristate "STM32 IPCC Mailbox" depends on MACH_STM32MP157 help Mailbox implementation for STMicroelectonics STM32 family chips with hardware for Inter-Processor Communication Controller (IPCC) between processors. Say Y here if you want to have this support. config MTK_CMDQ_MBOX tristate "MediaTek CMDQ Mailbox Support" depends on ARCH_MEDIATEK || COMPILE_TEST select MTK_INFRACFG help Say yes here to add support for the MediaTek Command Queue (CMDQ) mailbox driver. The CMDQ is used to help read/write registers with critical time limitation, such as updating display configuration during the vblank. config ZYNQMP_IPI_MBOX bool "Xilinx ZynqMP IPI Mailbox" depends on ARCH_ZYNQMP && OF help Say yes here to add support for Xilinx IPI mailbox driver. This mailbox driver is used to send notification or short message between processors with Xilinx ZynqMP IPI. It will place the message to the IPI buffer and will access the IPI control registers to kick the other processor or enquire status. endif