kernel/linux.git/Documentation/devicetree/bindings/iommu, branch linux-7.0.y

dt-bindings: iommu: Add NVIDIA Tegra CMDQV support

2026-01-16T12:41:27+00:00

The Command Queue Virtualization (CMDQV) hardware is part of the SMMUv3 implementation on NVIDIA Tegra SoCs. It assists in virtualizing the command queue for the SMMU. Add a new device tree binding document for nvidia,tegra264-cmdqv. Also update the arm,smmu-v3 binding to include an optional nvidia,cmdqv property. This property is a phandle to the CMDQV device node, allowing the SMMU driver to associate with its corresponding CMDQV instance. Restrict this property usage to Nvidia Tegra264 only. Reviewed-by: Rob Herring (Arm) Acked-by: Nicolin Chen Signed-off-by: Ashish Mhetre Reviewed-by: Jon Hunter Signed-off-by: Thierry Reding

Merge tag 'iommu-updates-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

2025-12-05T02:05:06+00:00

Pull iommu updates from Joerg Roedel: - Introduction of the generic IO page-table framework with support for Intel and AMD IOMMU formats from Jason. This has good potential for unifying more IO page-table implementations and making future enhancements more easy. But this also needed quite some fixes during development. All known issues have been fixed, but my feeling is that there is a higher potential than usual that more might be needed. - Intel VT-d updates: - Use right invalidation hint in qi_desc_iotlb() - Reduce the scope of INTEL_IOMMU_FLOPPY_WA - ARM-SMMU updates: - Qualcomm device-tree binding updates for Kaanapali and Glymur SoCs and a new clock for the TBU. - Fix error handling if level 1 CD table allocation fails. - Permit more than the architectural maximum number of SMRs for funky Qualcomm mis-implementations of SMMUv2. - Mediatek driver: - MT8189 iommu support - Move ARM IO-pgtable selftests to kunit - Device leak fixes for a couple of drivers - Random smaller fixes and improvements * tag 'iommu-updates-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (81 commits) iommupt/vtd: Support mgaw's less than a 4 level walk for first stage iommupt/vtd: Allow VT-d to have a larger table top than the vasz requires powerpc/pseries/svm: Make mem_encrypt.h self contained genpt: Make GENERIC_PT invisible iommupt: Avoid a compiler bug with sw_bit iommu/arm-smmu-qcom: Enable use of all SMR groups when running bare-metal iommupt: Fix unlikely flows in increase_top() iommu/amd: Propagate the error code returned by __modify_irte_ga() in modify_irte_ga() MAINTAINERS: Update my email address iommu/arm-smmu-v3: Fix error check in arm_smmu_alloc_cd_tables dt-bindings: iommu: qcom_iommu: Allow 'tbu' clock iommu/vt-d: Restore previous domain::aperture_end calculation iommu/vt-d: Fix unused invalidation hint in qi_desc_iotlb iommu/vt-d: Set INTEL_IOMMU_FLOPPY_WA depend on BLK_DEV_FD iommu/tegra: fix device leak on probe_device() iommu/sun50i: fix device leak on of_xlate() iommu/omap: simplify probe_device() error handling iommu/omap: fix device leaks on probe_device() iommu/mediatek-v1: add missing larb count sanity check iommu/mediatek-v1: fix device leaks on probe() ...

Merge tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2025-12-04T23:50:37+00:00

Pull devicetree updates from Rob Herring: "DT bindings: - Convert lattice,ice40-fpga-mgr, apm,xgene-storm-dma, brcm,sr-thermal, amazon,al-thermal, brcm,ocotp, mt8173-mdp, Actions Owl SPS, Marvell AP80x System Controller, Marvell CP110 System Controller, cznic,moxtet, and apm,xgene-slimpro-mbox to DT schema format - Add i.MX95 fsl,irqsteer, MT8365 Mali Bifrost GPU, Anvo ANV32C81W EEPROM, and Microchip pic64gx PLIC - Add missing LGE, AMD Seattle, and APM X-Gene SoC platform compatibles - Updates to brcm,bcm2836-l1-intc, brcm,bcm2835-hvs, and bcm2711-hdmi bindings to fix warnings on BCM2712 platforms - Drop obsolete db8500-thermal.txt - Treewide clean-up of extra blank lines and inconsistent quoting - Ensure all .dtbo targets are applied to a base .dtb - Speed up dt_binding_check by skipping running validation on empty examples DT core: - Add of_machine_device_match() and of_machine_get_match_data() helpers and convert users treewide - Fix bounds checking of address properties in FDT code. Rework the code to have a single implementation of the bounds checks. - Rework of_irq_init() to ignore any implicit interrupt-parent (i.e. in a parent node) on nodes without an interrupt. This matches the spec description and fixes some RISC-V platforms. - Avoid a spurious message on overlay removal - Skip DT kunit tests on RISCV+ACPI" * tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (55 commits) dt-bindings: kbuild: Skip validating empty examples dt-bindings: interrupt-controller: brcm,bcm2836-l1-intc: Drop interrupt-controller requirement dt-bindings: display: Fix brcm,bcm2835-hvs bindings for BCM2712 dt-bindings: display: bcm2711-hdmi: Add interrupt details for BCM2712 of: Skip devicetree kunit tests when RISCV+ACPI doesn't populate root node soc: tegra: Simplify with of_machine_device_match() soc: qcom: ubwc: Simplify with of_machine_get_match_data() powercap: dtpm: Simplify with of_machine_get_match_data() platform: surface: Simplify with of_machine_get_match_data() irqchip/atmel-aic: Simplify with of_machine_get_match_data() firmware: qcom: scm: Simplify with of_machine_device_match() cpuidle: big_little: Simplify with of_machine_device_match() cpufreq: sun50i: Simplify with of_machine_device_match() cpufreq: mediatek: Simplify with of_machine_get_match_data() cpufreq: dt-platdev: Simplify with of_machine_get_match_data() of: Add wrappers to match root node with OF device ID tables dt-bindings: eeprom: at25: Add Anvo ANV32C81W of/reserved_mem: Simplify the logic of __reserved_mem_alloc_size() of/reserved_mem: Simplify the logic of fdt_scan_reserved_mem_reg_nodes() of/reserved_mem: Simplify the logic of __reserved_mem_reserve_reg() ...

Merge branches 'arm/smmu/updates', 'arm/smmu/bindings', 'mediatek', 'nvidia/tegra', 'intel/vt-d', 'amd/amd-vi' and 'core' into next

2025-11-28T07:44:21+00:00

dt-bindings: iommu: qcom_iommu: Allow 'tbu' clock

2025-11-24T16:55:18+00:00

Some IOMMUs on some platforms (there doesn't seem to be a good denominator for this) require the presence of a third clock, specifically relating to the instance's Translation Buffer Unit (TBU). Stephan Gerhold noted [1] that according to Qualcomm Snapdragon 410E Processor (APQ8016E) Technical Reference Manual, SMMU chapter, section "8.8.3.1.2 Clock gating", which reads: For APPS TCU/TBU (TBU to TCU interface is asynchronous) Software should turn ON clock to APPS TCU - During APPS TCU register programming sequence For GPU TCU/TBU (TBU to TCU interface is synchronous) Software should turn ON clock to GPU TBU - During GPU TLB invalidation sequence <===================== Software should turn ON clock to GPU TCU - During GPU TCU register programming sequence - While GPU master clock is Active The clock should be turned on at least during TLB invalidation on the GPU SMMU instance. This is corroborated by Commit 5bc1cf1466f6 ("iommu/qcom: add optional 'tbu' clock for TLB invalidate"). This is also not to be confused with qcom,sdm845-tbu, which is a description of a debug interface, absent on the generation of hardware that this binding describes. Allow this clock. [1] https://lore.kernel.org/linux-arm-msm/aPX_cKtial56AgvU@linaro.org/ Reviewed-by: Rob Herring Signed-off-by: Konrad Dybcio Reviewed-by: Bjorn Andersson Signed-off-by: Will Deacon

dt-bindings: arm-smmu: Add Kaanapali and Glymur GPU SMMU

2025-11-18T17:04:13+00:00

Update the devicetree bindings to document the GPU SMMUs present in Kaanapali and Glymur chipsets. Acked-by: Krzysztof Kozlowski Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/689028/ Message-ID: <20251118-kaana-gpu-support-v4-19-86eeb8e93fb6@oss.qualcomm.com> Signed-off-by: Rob Clark

dt-bindings: Remove extra blank lines

2025-11-17T17:24:50+00:00

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)

dt-bindings: arm-smmu: Add compatible for Kaanapali and Glymur SoCs

2025-11-03T15:55:07+00:00

Qualcomm Kaanapali and Glymur SoCs include apps smmu that implements arm,mmu-500, which is used to translate device-visible virtual addresses to physical addresses. Add compatible for these items. Co-developed-by: Pankaj Patil Signed-off-by: Pankaj Patil Signed-off-by: Jingyi Wang Reviewed-by: Krzysztof Kozlowski Signed-off-by: Will Deacon

dt-bindings: mediatek: mt8189: Add bindings for MM & APU & INFRA IOMMU

2025-10-27T12:42:48+00:00

There are three iommu in total, namely MM_IOMMU, APU_IOMMU, INFRA_IOMMU, Add bindings for them. Signed-off-by: Zhengnan Chen Reviewed-by: Matthias Brugger Acked-by: Conor Dooley Reviewed-by: AngeloGioacchino Del Regno Acked-by: Krzysztof Kozlowski Signed-off-by: Joerg Roedel

Merge tag 'soc-drivers-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2025-10-02T00:32:51+00:00

Pull SoC driver updates from Arnd Bergmann: "Lots of platform specific updates for Qualcomm SoCs, including a new TEE subsystem driver for the Qualcomm QTEE firmware interface. Added support for the Apple A11 SoC in drivers that are shared with the M1/M2 series, among more updates for those. Smaller platform specific driver updates for Renesas, ASpeed, Broadcom, Nvidia, Mediatek, Amlogic, TI, Allwinner, and Freescale SoCs. Driver updates in the cache controller, memory controller and reset controller subsystems. SCMI firmware updates to add more features and improve robustness. This includes support for having multiple SCMI providers in a single system. TEE subsystem support for protected DMA-bufs, allowing hardware to access memory areas that managed by the kernel but remain inaccessible from the CPU in EL1/EL0" * tag 'soc-drivers-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (139 commits) soc/fsl/qbman: Use for_each_online_cpu() instead of for_each_cpu() soc: fsl: qe: Drop legacy-of-mm-gpiochip.h header from GPIO driver soc: fsl: qe: Change GPIO driver to a proper platform driver tee: fix register_shm_helper() pmdomain: apple: Add "apple,t8103-pmgr-pwrstate" dt-bindings: spmi: Add Apple A11 and T2 compatible serial: qcom-geni: Load UART qup Firmware from linux side spi: geni-qcom: Load spi qup Firmware from linux side i2c: qcom-geni: Load i2c qup Firmware from linux side soc: qcom: geni-se: Add support to load QUP SE Firmware via Linux subsystem soc: qcom: geni-se: Cleanup register defines and update copyright dt-bindings: qcom: se-common: Add QUP Peripheral-specific properties for I2C, SPI, and SERIAL bus Documentation: tee: Add Qualcomm TEE driver tee: qcom: enable TEE_IOC_SHM_ALLOC ioctl tee: qcom: add primordial object tee: add Qualcomm TEE driver tee: increase TEE_MAX_ARG_SIZE to 4096 tee: add TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF tee: add TEE_IOCTL_PARAM_ATTR_TYPE_UBUF tee: add close_context to TEE driver operation ...