[PATCH v3 0/3] Add iommu supports
Dinh Nguyen
dinguyen at kernel.org
Mon Oct 20 08:22:55 PDT 2025
On 10/14/25 19:13, Khairul Anuar Romli wrote:
> This patch series adds IOMMU support for the Agilex5 platform by:
>
> - Updating the device tree bindings for:
> - Cadence HP NAND controller (`cdns,hp-nfc`)
> - Synopsys DesignWare AXI DMA controller (`snps,dw-axi-dmac`)
> to accept the `iommus` property.
>
> - Adding the SMMU (System Memory Management Unit) node to the Agilex5
> device tree and wiring up the IOMMU properties to the supported
> peripherals:
> - NAND controller
> - DMA controller
> - SPI controller
>
> The Agilex5 SoC includes an ARM SMMU v3 with dedicated Translation Buffer
> Units (TBUs) for peripherals. These allow for hardware-enforced DMA
> address translation and memory isolation using the IOMMU framework.
>
> Enabling IOMMU support ensures proper integration of these devices in
> virtualized or secure environments, and aligns the platform with ARM’s
> architectural requirements.
>
> ---
> Changes in v3:
> - Refined commit messages with detailed hardware descriptions.
> - Clarified which peripherals are covered in the DT changes.
> Changes in v2:
> - Add more description in the commit message body to clarify
> device required for this changes.
> ---
> Khairul Anuar Romli (3):
> dt-bindings: mtd: cdns,hp-nfc: Add iommu property
> dt-bindings: dma: snps,dw-axi-dmac: Add iommu property
> arm64: dts: socfpga: agilex5: Add SMMU nodes
>
Applied!
Thanks,
Dinh
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