Commit bf3022a4 authored by Anup Patel's avatar Anup Patel Committed by Paul Walmsley
Browse files

mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driver 



Add a mailbox controller driver for the new SBI message proxy extension
which is part of the SBI v3.0 specification.

Acked-by: default avatarJassi Brar <jassisinghbrar@gmail.com>
Co-developed-by: default avatarRahul Pathak <rpathak@ventanamicro.com>
Signed-off-by: default avatarRahul Pathak <rpathak@ventanamicro.com>
Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20250818040920.272664-8-apatel@ventanamicro.com


Signed-off-by: default avatarPaul Walmsley <pjw@kernel.org>
parent 6f01c24f

drivers/mailbox/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -369,4 +369,15 @@ config BCM74110_MAILBOX 
	  processor and coprocessor that handles various power management task

	  and more.



config RISCV_SBI_MPXY_MBOX

	tristate "RISC-V SBI Message Proxy (MPXY) Mailbox"

	depends on RISCV_SBI

	default RISCV

	help

	  Mailbox driver implementation for RISC-V SBI Message Proxy (MPXY)

	  extension. This mailbox driver is used to send messages to the

	  remote processor through the SBI implementation (M-mode firmware

	  or HS-mode hypervisor). Say Y here if you want to have this support.

	  If unsure say N.



endif

drivers/mailbox/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -78,3 +78,5 @@ obj-$(CONFIG_THEAD_TH1520_MBOX) += mailbox-th1520.o 
obj-$(CONFIG_CIX_MBOX)	+= cix-mailbox.o



obj-$(CONFIG_BCM74110_MAILBOX)	+= bcm74110-mailbox.o



obj-$(CONFIG_RISCV_SBI_MPXY_MBOX)	+= riscv-sbi-mpxy-mbox.o

drivers/mailbox/riscv-sbi-mpxy-mbox.c

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