Changes in Kconfig

7bcfb7e65457f784b9495b10743f2c9db409b5b7 - mailbox: qcom: Unify user-visible "Qualcomm" name

Mon, 27 Apr 2026 09:01:14 +0200

mailbox: qcom: Unify user-visible "Qualcomm" nameVarious names for Qualcomm as a company are used in user-visible configoptions: QCOM, Qualcomm and Qualcomm Technologies. Switch to unified"Qualcomm" so it will be easier for users to identify the options whenfor example running menuconfig.Signed-off-by: Krzysztof Kozlowski Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

6acf50c7f0ba4fcc048bd9018080fa53844c5705 - mailbox: Improve RISCV_SBI_MPXY_MBOX guidance

Thu, 15 Jan 2026 15:19:11 +0100

mailbox: Improve RISCV_SBI_MPXY_MBOX guidanceRISC-V SBI Message Proxy (MPXY) Mailbox support defaults to enabled, butthe help text states "If unsure say N".Recommend enabling this driver, as it is a very critical RISC-V driverproviding mailbox channels to other drivers such as clock, system MSIs,etc.Fixes: bf3022a4eb119c6b ("mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driver")Suggested-by: Anup Patel Signed-off-by: Geert Uytterhoeven Reviewed-by: Anup Patel Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

b411f2109ec1fb47384c9596e34826eed8e7aaec - mailbox: mpfs: drop POLARFIRE from ARCH_MICROCHIP_POLARFIRE

Mon, 17 Nov 2025 16:46:56 +0100

mailbox: mpfs: drop POLARFIRE from ARCH_MICROCHIP_POLARFIREThe ARCH_MICROCHIP symbol has been defined for some time on RISCV, as areplacement for ARCH_MICROCHIP_POLARFIRE since there are now otherMicrochip RISC-V products. Drop the POLARFIRE fromARCH_MICROCHIP_POLARFIRE in the POLARFIRE_SOC_MAILBOX Kconfig entrysince the newly added pic64gx also uses the mailbox and it is one of thefew users of ARCH_MICROCHIP_POLARFIRE left in the tree.Signed-off-by: Conor Dooley Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

da5eef6a5e941faf6bf5942696671aa15216cfbb - mailbox: remove unneeded double quotation

Thu, 30 Oct 2025 00:38:40 +0100

mailbox: remove unneeded double quotationIt makes Kconfig strange. fix it.Signed-off-by: Kuninori Morimoto Reviewed-by: Geert Uytterhoeven Reviewed-by: Wolfram Sang Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

b562abd956726f57bb78813b4c77db51d28933a9 - mailbox: mediatek: Add mtk-vcp-mailbox driver

Mon, 13 Oct 2025 08:31:36 +0200

mailbox: mediatek: Add mtk-vcp-mailbox driverAdd mtk-vcp-mailbox driver to support the communication withVCP remote microprocessor.Signed-off-by: Jjian Zhou Reviewed-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

cd5a0afbdf8033dc83786315d63f8b325bdba2fd - Merge tag 'mailbox-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

Wed, 08 Oct 2025 20:44:21 +0200

Merge tag 'mailbox-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailboxPull mailbox updates from Jassi Brar: - Qualcomm: add Glymur CPUCP mailbox binding - Xilinx Zynq: misc cleanup - MediaTek: - add new GPUEB mailbox driver - cmdq: remove pm_runtime calls from send_data - gce: make clock-names optional - misc: - change mailbox-altera maintainer - remove redundant 'fast_io' in regmap_config - mhuv3: Remove no_free_ptr* tag 'mailbox-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: mailbox: mtk-cmdq: Remove pm_runtime APIs from cmdq_mbox_send_data() mailbox: add MediaTek GPUEB IPI mailbox dt-bindings: mailbox: Add MT8196 GPUEB Mailbox mailbox: zynqmp-ipi: Fix SGI cleanup on unbind mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop mailbox: zynqmp-ipi: Remove dev.parent check in zynqmp_ipi_free_mboxes mailbox: zynqmp-ipi: Remove redundant mbox_controller_unregister() call mailbox: remove unneeded 'fast_io' parameter in regmap_config dt-bindings: mailbox: mediatek,gce-mailbox: Make clock-names optional dt-bindings: mailbox: qcom: Document Glymur CPUCP mailbox controller binding MAINTAINERS: Change mailbox-altera maintainer mailbox: arm_mhuv3: Remove no_free_ptr() to maintain the original form of the pointer List of files: /linux/drivers/mailbox/Kconfig

dbca0eabb821a6278925712a7bb263d0997e9c8f - mailbox: add MediaTek GPUEB IPI mailbox

Fri, 03 Oct 2025 22:15:06 +0200

mailbox: add MediaTek GPUEB IPI mailboxThe MT8196 SoC uses an embedded MCU to control frequencies and power ofthe GPU. This controller is referred to as "GPUEB".It communicates to the application processor, among other ways, througha mailbox.The mailbox exposes one interrupt, which appears to only be fired when aresponse is received, rather than a transaction is completed. For us,this means we unfortunately need to poll for txdone.The mailbox also requires the EB clock to be on when touching any of themailbox registers.Add a simple driver for it based on the common mailbox framework.Reviewed-by: Chia-I Wu Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Nicolas Frattaroli Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

bf3022a4eb119c6b4e3424d6b19d8bfdfbc9bb57 - mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driver

Mon, 18 Aug 2025 06:09:03 +0200

mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driverAdd a mailbox controller driver for the new SBI message proxy extensionwhich is part of the SBI v3.0 specification.Acked-by: Jassi Brar Co-developed-by: Rahul Pathak Signed-off-by: Rahul Pathak Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20250818040920.272664-8-apatel@ventanamicro.comSigned-off-by: Paul Walmsley List of files: /linux/drivers/mailbox/Kconfig

ae524eb766460a9f7957bf2db0968c9cccb71d90 - mailbox: aspeed: add mailbox driver for AST27XX series SoC

Tue, 22 Jul 2025 03:31:17 +0200

mailbox: aspeed: add mailbox driver for AST27XX series SoCAdd mailbox controller driver for AST27XX SoCs, which providesindependent tx/rx mailbox between different processors. There are 4channels for each tx/rx mailbox and each channel has an 32-byte FIFO.Signed-off-by: Jammy Huang Reviewed-by: Andrew Jeffery Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

52436007b862a90348ac8efc3a89eaceb2234f53 - mailbox: Add support for bcm74110

Tue, 03 Jun 2025 00:23:11 +0200

mailbox: Add support for bcm74110The bcm74110 mailbox driver is used to communicate witha co-processor for various power management and firmwarerelated tasks.Signed-off-by: Justin Chen Reviewed-by: Florian Fainelli Tested-by: Florian Fainelli Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

c5b9bff35a9823c4dd803f0eda3b34be88bbcded - Merge branch 'newsoc/cix-p1' into soc/newsoc

Mon, 21 Jul 2025 17:15:45 +0200

Merge branch 'newsoc/cix-p1' into soc/newsocPatches from Peter Chen :Cixtech P1 (internal name sky1) is high performance generic Armv9 SoC.Orion O6 is the Arm V9 Motherboard built by Radxa. You could find briefintroduction for SoC and related boards at:https://radxa.com/products/orion/o6#overviewCurrently, to run upstream kernel at Orion O6 board, you need touse BIOS released by Radxa, and add "clk_ignore_unused=1" at bootargs.https://docs.radxa.com/en/orion/o6/bios/install-biosIn this series, we add initial SoC and board support for Kernel building.Since mailbox is used for SCMI clock communication, mailbox driver is addedin this series for the minimum SoC support.Patch 1-2: add dt-binding doc for CIX and its sky1 SoCPatch 3: add Arm64 build supportPatch 4-5: add CIX mailbox driver which needs to support SCMI clock protocol.Patch 6: add Arm64 defconfig supportPatch 7-8: add initial dts support for SoC and Orion O6 boardPatch 9: add MAINTAINERS entry* newsoc/cix-p1: MAINTAINERS: Add CIX SoC maintainer entry arm64: dts: cix: Add sky1 base dts initial support dt-bindings: clock: cix: Add CIX sky1 scmi clock id arm64: defconfig: Enable CIX SoC mailbox: add CIX mailbox driver dt-bindings: mailbox: add cix,sky1-mbox arm64: Kconfig: add ARCH_CIX for cix silicons dt-bindings: arm: add CIX P1 (SKY1) SoC dt-bindings: vendor-prefixes: Add CIX Technology Group Co., Ltd.Signed-off-by: Arnd Bergmann List of files: /linux/drivers/mailbox/Kconfig

fe2aa2361ddba8f4ccf05123e0e14e9fb70ea701 - mailbox: add CIX mailbox driver

Mon, 21 Jul 2025 16:44:56 +0200

mailbox: add CIX mailbox driverThe CIX mailbox controller, used in the Cix SoCs, like sky1.facilitates message transmission between multiple processorswithin the SoC, such as the AP, PM, audio DSP, SensorHub MCU,and others.Acked-by: Jassi Brar Reviewed-by: Peter Chen Signed-off-by: Guomin Chen Signed-off-by: Gary Yang Signed-off-by: Lihua Liu Signed-off-by: Peter Chen Signed-off-by: Arnd Bergmann List of files: /linux/drivers/mailbox/Kconfig

529015a0e77a57e17801e4a3338d74674e1f5704 - mailbox: sophgo: add mailbox driver for CV18XX series SoC

Tue, 20 May 2025 09:44:24 +0200

mailbox: sophgo: add mailbox driver for CV18XX series SoCAdd mailbox controller driver for CV18XX SoCs, which provides 8 channelsand each channel has an 8-byte FIFO.Signed-off-by: Yuntao Dai Signed-off-by: Junhui Liu Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

d635ba4207c31940398c41caa0cedd80f3b9c9c7 - mailbox: mchp-ipc-sbi: Fix COMPILE_TEST build error

Fri, 11 Apr 2025 09:57:47 +0200

mailbox: mchp-ipc-sbi: Fix COMPILE_TEST build errorIf COMPILE_TEST is y but RISCV_SBI is n, build fails:drivers/mailbox/mailbox-mchp-ipc-sbi.c: In function 'mchp_ipc_sbi_chan_send':drivers/mailbox/mailbox-mchp-ipc-sbi.c:119:23: error: storage size of 'ret' isn't known struct sbiret ret; ^~~ CC drivers/nvmem/lpc18xx_otp.odrivers/mailbox/mailbox-mchp-ipc-sbi.c:121:15: error: implicit declaration of function 'sbi_ecall' [-Werror=implicit-function-declaration] ret = sbi_ecall(SBI_EXT_MICROCHIP_TECHNOLOGY, command, channel, ^~~~~~~~~move COMPILE_TEST to ARCH_MICROCHIP dependency as other drivers.Fixes: e4b1d67e7141 ("mailbox: add Microchip IPC support")Signed-off-by: Yue Haibing Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

fbf7e5ce408e0619072e84e93e875de52f2b5fa5 - mailbox: add Samsung Exynos driver

Wed, 15 Jan 2025 15:18:15 +0100

mailbox: add Samsung Exynos driverThe Samsung Exynos mailbox controller, used on Google GS101 SoC, has 16flag bits for hardware interrupt generation and a shared register forpassing mailbox messages. When the controller is used by theACPM interface the shared register is ignored and the mailbox controlleracts as a doorbell. The controller just raises the interrupt to APMafter the ACPM interface has written the message to SRAM.Add support for the Samsung Exynos mailbox controller.Signed-off-by: Tudor Ambarus Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

e4b1d67e71419c4af581890ecea84b04920d4116 - mailbox: add Microchip IPC support

Tue, 17 Dec 2024 12:31:34 +0100

mailbox: add Microchip IPC supportAdd a mailbox controller driver for the Microchip Inter-processorCommunication (IPC), which is used to send and receive data betweenprocessors.The driver uses the RISC-V Supervisor Binary Interface (SBI) tocommunicate with software running in machine mode (M-mode) to accessthe IPC hardware block.Additional details on the Microchip vendor extension and the IPCfunction IDs described in the driver can be found in the followingdocumentation:https://github.com/linux4microchip/microchip-sbi-ecall-extensionThis SBI interface in this driver is compatible with the Mi-V Inter-hartCommunication (IHC) IP.Transmitting and receiving data through the mailbox framework is donethrough struct mchp_ipc_msg.Signed-off-by: Valentina Fernandez Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

5d4d263e1c6b6b18acb4d67fd3b9af71b7404924 - mailbox: Introduce support for T-head TH1520 Mailbox driver

Mon, 04 Nov 2024 11:07:32 +0100

mailbox: Introduce support for T-head TH1520 Mailbox driverThis driver was tested using the drm/imagination GPU driver. It was ableto successfully power on the GPU, by passing a command through mailboxfrom E910 core to E902 that's responsible for powering up the GPU. TheGPU driver was able to read the BVNC version from control registers,which confirms it was successfully powered on.[ 33.957467] powervr ffef400000.gpu: [drm] loaded firmwarepowervr/rogue_36.52.104.182_v1.fw[ 33.966008] powervr ffef400000.gpu: [drm] FW version v1.0 (build6621747 OS)[ 38.978542] powervr ffef400000.gpu: [drm] *ERROR* Firmware failed tobootThough the driver still fails to boot the firmware, the mailbox driverworks when used with the not-yet-upstreamed firmware AON driver. Thereis ongoing work to get the BXM-4-64 supported with the drm/imaginationdriver [1], though it's not completed yet.This work is based on the driver from the vendor kernel [2].Link: https://gitlab.freedesktop.org/imagination/linux-firmware/-/issues/2 [1]Link: https://github.com/revyos/thead-kernel.git [2]Signed-off-by: Michal Wilczynski Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

ff391d4537585912032eaf7722ca235228660787 - mailbox: ti-msgmgr: Allow building under COMPILE_TEST

Tue, 15 Oct 2024 23:33:22 +0200

mailbox: ti-msgmgr: Allow building under COMPILE_TESTThe TI message manager driver can be compiled without ARCH_KEYSTONEnor ARCH_K3 enabled. Allow it to be built under COMPILE_TEST.Signed-off-by: Andrew Davis Acked-by: Arnd Bergmann Reviewed-by: Nishanth Menon Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

a4123ffab9ece0c2d3d5c460724d49c4051fd279 - mailbox: mpfs: support new, syscon based, devicetree configuration

Wed, 02 Oct 2024 12:48:00 +0200

mailbox: mpfs: support new, syscon based, devicetree configurationThe two previous bindings for this hardware were incorrect, as thecontrol/status and interrupt register regions should have been describedas syscons and dealt with via regmap in the driver. Add support foraccessing these registers using that method now, so that the hwmondriver can be supported without using auxdev or hacks with io_remap().Signed-off-by: Conor Dooley Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig

54595f2807d203770ee50486cb23dc5763916d72 - mailbox, remoteproc: omap2+: fix compile testing

Mon, 09 Sep 2024 22:38:09 +0200

mailbox, remoteproc: omap2+: fix compile testingSelecting CONFIG_OMAP2PLUS_MBOX while compile testingcauses a build failure:WARNING: unmet direct dependencies detected for OMAP2PLUS_MBOX Depends on [n]: MAILBOX [=y] && (ARCH_OMAP2PLUS || ARCH_K3) Selected by [m]: - TI_K3_M4_REMOTEPROC [=m] && REMOTEPROC [=y] && (ARCH_K3 || COMPILE_TEST [=y])Using 'select' to force-enable another subsystem is generallya mistake and causes problems such as this one, so change thethree drivers that link against this driver to use 'depends on'instead, and ensure the driver itself can be compile testedregardless of the platform.When compile-testing without CONFIG_TI_SCI_PROTOCOL=m, thereis a chance for a link failure, so add a careful dependencyon that.arm-linux-gnueabi-ld: drivers/remoteproc/ti_k3_m4_remoteproc.o: in function `k3_m4_rproc_probe':ti_k3_m4_remoteproc.c:(.text.k3_m4_rproc_probe+0x76): undefined reference to `devm_ti_sci_get_by_phandle'Fixes: ebcf9008a895 ("remoteproc: k3-m4: Add a remoteproc driver for M4F subsystem")Signed-off-by: Arnd Bergmann Reviewed-by: Mathieu Poirier Reviewed-by: Andrew Davis Reviewed-by: Martyn Welch Signed-off-by: Jassi Brar List of files: /linux/drivers/mailbox/Kconfig