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 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 OMAP2PLUS_MBOX tristate "OMAP2+ Mailbox framework support" depends on ARCH_OMAP2PLUS 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 help An implementation of Message Manager slave driver for Keystone architecture SoCs from Texas Instruments. Message Manager is a communication entity found on few of Texas Instrument's keystone 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 HI6220_MBOX tristate "Hi6220 Mailbox" depends on 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 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 PDC Mailbox" depends on ARM64 || COMPILE_TEST depends on HAS_DMA default ARCH_BCM_IPROC help Mailbox implementation for the Broadcom PDC ring manager, which provides access to various offload engines on Broadcom SoCs. Say Y here if you want to use the Broadcom PDC. endif