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(unknown [IPv6:2a01:e0a:120:3210:d44b:b63b:15ee:9c1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: benjamin.gaignard) by bali.collaboradmins.com (Postfix) with ESMTPSA id CF70017E156D; Mon, 23 Jun 2025 17:39:37 +0200 (CEST) From: Benjamin Gaignard To: joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, heiko@sntech.de, nicolas.dufresne@collabora.com, jgg@ziepe.ca Cc: iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, kernel@collabora.com, Benjamin Gaignard Subject: [PATCH v4 2/5] dt-bindings: iommu: verisilicon: Add binding for VSI IOMMU Date: Mon, 23 Jun 2025 17:39:26 +0200 Message-ID: <20250623153931.158765-3-benjamin.gaignard@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250623153931.158765-1-benjamin.gaignard@collabora.com> References: <20250623153931.158765-1-benjamin.gaignard@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250623_083940_342732_DAA6B559 X-CRM114-Status: GOOD ( 11.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a device tree binding for the Verisilicon (VSI) IOMMU. This IOMMU sits in front of hardware encoder and decoder blocks on SoCs using Verisilicon IP, such as the Rockchip RK3588. Signed-off-by: Benjamin Gaignard --- changes in version 4: - rename and reorder compatibles fields. .../bindings/iommu/verisilicon,iommu.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/verisilicon,iommu.yaml diff --git a/Documentation/devicetree/bindings/iommu/verisilicon,iommu.yaml b/Documentation/devicetree/bindings/iommu/verisilicon,iommu.yaml new file mode 100644 index 000000000000..d3ce9e603b61 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/verisilicon,iommu.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/verisilicon,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Verisilicon IOMMU + +maintainers: + - Benjamin Gaignard + +description: |+ + A Versilicon iommu translates io virtual addresses to physical addresses for + its associated video decoder. + +properties: + compatible: + items: + - const: rockchip,rk3588-av1-iommu + - const: verisilicon,iommu-1.2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Core clock + - description: Interface clock + + clock-names: + items: + - const: core + - const: iface + + "#iommu-cells": + const: 0 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + #include + #include + + bus { + #address-cells = <2>; + #size-cells = <2>; + + iommu@fdca0000 { + compatible = "rockchip,rk3588-av1-iommu","verisilicon,iommu-1.2"; + reg = <0x0 0xfdca0000 0x0 0x600>; + interrupts = ; + clocks = <&cru ACLK_AV1>, <&cru PCLK_AV1>; + clock-names = "core", "iface"; + #iommu-cells = <0>; + }; + }; -- 2.43.0