linux/drivers/mailbox, branch v6.17

mailbox/pcc: support mailbox management of the shared buffer

2025-08-08T04:49:56Z

Define a new, optional, callback that allows the driver to specify how the return data buffer is allocated. If that callback is set, mailbox/pcc.c is now responsible for reading from and writing to the PCC shared buffer. This also allows for proper checks of the Commnand complete flag between the PCC sender and receiver. For Type 4 channels, initialize the command complete flag prior to accepting messages. Since the mailbox does not know what memory allocation scheme to use for response messages, the client now has an optional callback that allows it to allocate the buffer for a response message. When an outbound message is written to the buffer, the mailbox checks for the flag indicating the client wants an tx complete notification via IRQ. Upon receipt of the interrupt It will pair it with the outgoing message. The expected use is to free the kernel memory buffer for the previous outgoing message. Signed-off-by: Adam Young Signed-off-by: Jassi Brar

mailbox: bcm74110: Fix spelling mistake

2025-08-06T17:45:05Z

There is a spelling mistake in the author's email address. Fix it. Signed-off-by: Colin Ian King Reviewed-by: Justin Chen Signed-off-by: Jassi Brar

mailbox: bcm74110: remove unneeded semicolon

2025-08-06T17:45:05Z

No functional modification involved. ./drivers/mailbox/bcm74110-mailbox.c:483:2-3: Unneeded semicolon. ./drivers/mailbox/bcm74110-mailbox.c:563:2-3: Unneeded semicolon. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22936 Signed-off-by: Jiapeng Chong Signed-off-by: Jassi Brar

mailbox: aspeed: add mailbox driver for AST27XX series SoC

2025-08-06T17:45:05Z

Add mailbox controller driver for AST27XX SoCs, which provides independent tx/rx mailbox between different processors. There are 4 channels 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

mailbox: Add support for bcm74110

2025-08-06T17:43:55Z

The bcm74110 mailbox driver is used to communicate with a co-processor for various power management and firmware related tasks. Signed-off-by: Justin Chen Reviewed-by: Florian Fainelli Tested-by: Florian Fainelli Signed-off-by: Jassi Brar

mailbox: Use dev_fwnode()

2025-08-06T17:41:38Z

irq_domain_create_simple() takes fwnode as the first argument. It can be extracted from the struct device using dev_fwnode() helper instead of using of_node with of_fwnode_handle(). So use the dev_fwnode() helper. Signed-off-by: Jiri Slaby (SUSE) Cc: Manivannan Sadhasivam Cc: Jassi Brar Signed-off-by: Jassi Brar

mailbox: mtk-cmdq: Switch to pm_runtime_put_autosuspend()

2025-08-06T17:41:32Z

__pm_runtime_put_autosuspend() was meant to be used by callers that needed to put the Runtime PM usage_count without marking the device's last busy timestamp. It was however seen that the Runtime PM autosuspend related functions should include that call. Thus switch the driver to use pm_runtime_put_autosuspend(). Signed-off-by: Sakari Ailus Signed-off-by: Jassi Brar

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

2025-07-21T15:16:16Z

Patches 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 brief introduction for SoC and related boards at: https://radxa.com/products/orion/o6#overview Currently, to run upstream kernel at Orion O6 board, you need to use BIOS released by Radxa, and add "clk_ignore_unused=1" at bootargs. https://docs.radxa.com/en/orion/o6/bios/install-bios In this series, we add initial SoC and board support for Kernel building. Since mailbox is used for SCMI clock communication, mailbox driver is added in this series for the minimum SoC support. Patch 1-2: add dt-binding doc for CIX and its sky1 SoC Patch 3: add Arm64 build support Patch 4-5: add CIX mailbox driver which needs to support SCMI clock protocol. Patch 6: add Arm64 defconfig support Patch 7-8: add initial dts support for SoC and Orion O6 board Patch 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

mailbox: add CIX mailbox driver

2025-07-21T15:14:55Z

The CIX mailbox controller, used in the Cix SoCs, like sky1. facilitates message transmission between multiple processors within 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

treewide, timers: Rename from_timer() to timer_container_of()

2025-06-08T07:07:37Z

Move this API to the canonical timer_*() namespace. [ tglx: Redone against pre rc1 ] Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com