linux/Documentation/devicetree/bindings/mailbox, branch master

Merge tag 'mailbox-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox

2026-02-14T19:13:32Z

Pull mailbox updates from Jassi Brar: "Platform and core updates PCC: - Updates to transmission and interrupt handling, including dynamic txdone configuration, ->last_tx_done() wiring, and SHMEM initialization fixes. Reverted previous shared buffer patch MediaTek - Introduce mtk-vcp-mailbox driver and bindings for MT8196 VCP - Expand mtk-cmdq for MT8196 with GCE virtualization, mminfra_offset, and instruction generation data Spreadtrum (SPRD) - Add Mailbox Revision 2 support and UMS9230 bindings - Fix unhandled interrupt masking and TX done delivery flags Microchip - Add pic64gx compatibility to MPFS - Fix out-of-bounds access and smatch warnings in mchp-ipc-sbi Core & Misc Platform Updates - Prevent out-of-bounds access in fw_mbox_index_xlate() - Add bindings for Qualcomm CPUCP (Kaanapali) - Simplify mtk-cmdq and zynqmp-ipi with scoped OF child iterators - Consolidate various minor fixes, dead code removal, and typo corrections across Broadcom, NXP, Samsung, Xilinx, ARM, and core headers" * tag 'mailbox-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (34 commits) mailbox: sprd: mask interrupts that are not handled mailbox: sprd: add support for mailbox revision 2 mailbox: sprd: clear delivery flag before handling TX done dt-bindings: mailbox: sprd: add compatible for UMS9230 mailbox: bcm-ferxrm-mailbox: Use default primary handler mailbox: Remove mailbox_client.h from controller drivers mailbox: zynqmp-ipi: Simplify with scoped for each OF child loop mailbox: mtk-cmdq: Simplify with scoped for each OF child loop dt-bindings: mailbox: xlnx,zynqmp-ipi-mailbox: Document msg region requirement mailbox: Improve RISCV_SBI_MPXY_MBOX guidance mailbox: mchp-ipc-sbi: fix uninitialized symbol and other smatch warnings mailbox: arm_mhuv3: fix typo in comment mailbox: cix: fix typo in error message mailbox: imx: Skip the suspend flag for i.MX7ULP mailbox: exynos: drop unneeded runtime pointer (pclk) mailbox: pcc: Remove spurious IRQF_ONESHOT usage mailbox: mtk-cmdq: Add driver data to support for MT8196 mailbox: mtk-cmdq: Add mminfra_offset configuration for DRAM transaction mailbox: mtk-cmdq: Add GCE hardware virtualization configuration mailbox: mtk-cmdq: Add cmdq private data to cmdq_pkt for generating instruction ...

dt-bindings: mailbox: sprd: add compatible for UMS9230

2026-02-02T00:59:14Z

Add a compatible string for the mailbox controller found in the UMS9230 SoC. Signed-off-by: Otto Pflüger Acked-by: Krzysztof Kozlowski Signed-off-by: Jassi Brar

dt-bindings: mailbox: xlnx,zynqmp-ipi-mailbox: Document msg region requirement

2026-01-25T00:42:39Z

Add description clarifying that for Versal IPI mailboxes, both host and remote agents must have the "msg" register region defined for successful message passing. Without both, only notification-based communication works. Signed-off-by: Harini T Acked-by: Rob Herring (Arm) Signed-off-by: Jassi Brar

dt-bindings: mbox: add pic64gx mailbox compatibility to mpfs mailbox

2026-01-18T20:19:20Z

pic64gx mailbox is compatible with mpfs mailbox, even if the mailbox consumer is not - the underlying communication mechanism is the same. Signed-off-by: Pierre-Henry Moussay Signed-off-by: Conor Dooley Reviewed-by: Rob Herring (Arm) Signed-off-by: Jassi Brar

dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings for Kaanapali

2026-01-18T18:50:45Z

Document CPUSS Control Processor (CPUCP) mailbox controller for Qualcomm Kaanapali, which is compatible with X1E80100, use fallback to indicate this. Signed-off-by: Jingyi Wang Acked-by: Rob Herring (Arm) Signed-off-by: Jassi Brar

dt-bindings: mailbox: mediatek,mt8196-vcp-mbox: add mtk vcp-mbox document

2026-01-18T18:50:45Z

The MTK VCP mailbox enables the SoC to communicate with the VCP by passing messages through 64 32-bit wide registers. It has 32 interrupt vectors in either direction for signalling purposes. This adds a binding for Mediatek VCP mailbox. Signed-off-by: Jjian Zhou Reviewed-by: Krzysztof Kozlowski Reviewed-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Jassi Brar

dt-bindings: mailbox: qcom: Add IPCC support for Kaanapali and Glymur Platforms

2026-01-17T21:35:17Z

Document the Inter-Processor Communication Controller on the Qualcomm Kaanapali and Glymur Platforms, which will be used to route interrupts across various subsystems found on the SoC. Co-developed-by: Sibi Sankar Signed-off-by: Sibi Sankar Signed-off-by: Jingyi Wang Reviewed-by: Bjorn Andersson Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20251031-knp-ipcc-v3-1-62ffb4168dff@oss.qualcomm.com Signed-off-by: Bjorn Andersson

dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings for Kaanapali

2026-01-16T19:31:14Z

dt-bindings: mailbox: qcom: Document SM8750 CPUCP mailbox controller

2026-01-03T18:16:36Z

Document CPU Control Processor (CPUCP) mailbox controller for Qualcomm SM8750 SoCs. It is software compatible with X1E80100 CPUCP mailbox controller hence fallback to it. Signed-off-by: Jagadeesh Kona Acked-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20251211-sm8750-cpufreq-v1-1-394609e8d624@oss.qualcomm.com Signed-off-by: Bjorn Andersson

dt-bindings: Remove extra blank lines

2025-11-17T17:24:50Z

Generally at most 1 blank line is the standard style for DT schema files. Remove the few cases with more than 1 so that the yamllint check for this can be enabled. Acked-by: Lee Jones Reviewed-by: Mathieu Poirier # remoteproc Acked-by: Georgi Djakov Acked-by: Vinod Koul Acked-by: Andi Shyti Acked-by: Bartosz Golaszewski Acked-by: Jonathan Cameron Acked-by: Philipp Zabel Acked-by: Uwe Kleine-König # for allwinner,sun4i-a10-pwm.yaml Reviewed-by: Miquel Raynal # mtd Acked-by: Guenter Roeck Acked-by: Mark Brown Acked-by: Greg Kroah-Hartman Acked-by: Sebastian Reichel Acked-by: Manivannan Sadhasivam # For PCI controller bindings Link: https://patch.msgid.link/20251023143957.2899600-1-robh@kernel.org Signed-off-by: Rob Herring (Arm)