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Mon, 7 Sep 2026 03:34:09 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 222.71.101.198) smtp.mailfrom=cixtech.com; dkim=none (message not signed) header.d=none;dmarc=bestguesspass action=none header.from=cixtech.com; Received-SPF: Pass (protection.outlook.com: domain of cixtech.com designates 222.71.101.198 as permitted sender) receiver=protection.outlook.com; client-ip=222.71.101.198; helo=smtprelay.cixcomputing.com; pr=C Received: from smtprelay.cixcomputing.com (222.71.101.198) by TY2PEPF0000AB87.mail.protection.outlook.com (10.167.253.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.406.5 via Frontend Transport; Mon, 7 Sep 2026 03:34:09 +0000 Received: from ubuntu (unknown [172.20.64.99]) by smtprelay.cixcomputing.com (Postfix) with ESMTPSA id AA6494092119; Mon, 7 Sep 2026 11:34:06 +0800 (CST) From: Jelly Jia To: vkoul@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: devicetree@vger.kernel.org, Frank.Li@kernel.org, robin.murphy@arm.com, cix-kernel-upstream@cixtech.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jelly Jia Subject: [PATCH v1 3/5] dt-bindings: dma: Add CIX Sky1 DMA-350 integration Date: Mon, 7 Sep 2026 11:34:02 +0800 Message-ID: <20260907033404.596839-4-Jelly.Jia@cixtech.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260907033404.596839-1-Jelly.Jia@cixtech.com> References: <20260907033404.596839-1-Jelly.Jia@cixtech.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TY2PEPF0000AB87:EE_|TY0PR06MB5609:EE_ Content-Type: text/plain X-MS-Office365-Filtering-Correlation-Id: d3e38639-2cc6-4659-42c4-08df0c90e0af X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700016|7416014|376014|23010399003|3023799007|10067099003|56012099006|22082099003|18002099003; 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The wrapper owns SoC integration resources. The child node describes the generic Arm DMA-350 IP. Signed-off-by: Jelly Jia --- .../bindings/dma/cix,sky1-dma350.yaml | 102 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 103 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml diff --git a/Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml b/Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml new file mode 100644 index 000000000000..e533f355d135 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml @@ -0,0 +1,102 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/cix,sky1-dma350.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: CIX Sky1 DMA-350 Integration + +maintainers: + - CIX Kernel Team + +description: + The CIX Sky1 DMA-350 integration driver owns SoC resources around an + Arm DMA-350 controller, such as clocks, resets, interrupt routing, and + optional reserved memory. Reserved memory is described on this parent node + and assigned by the integration driver to the child DMA-350 device. The child + node describes the generic DMA-350 IP. + +properties: + $nodename: + pattern: "^dma@[0-9a-f]+$" + + compatible: + const: cix,sky1-dma350 + + "#address-cells": + const: 2 + + "#size-cells": + const: 2 + + ranges: true + + dma-ranges: true + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + power-domains: + maxItems: 1 + + cix,irq-router: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Syscon phandle for the Sky1 subsystem register block that routes + DMA-350 channel interrupts to the AP interrupt controller. + + memory-region: + maxItems: 1 + description: + Reserved memory pool assigned by the CIX Sky1 DMA-350 integration driver + to the child Arm DMA-350 device. + +patternProperties: + '^dma-controller@[0-9a-f]+$': + $ref: arm,dma-350.yaml# + +required: + - compatible + - "#address-cells" + - "#size-cells" + - ranges + - dma-ranges + +additionalProperties: false + +examples: + - | + #include + + / { + #address-cells = <2>; + #size-cells = <2>; + interrupt-parent = <&gic>; + + gic: interrupt-controller { + #address-cells = <0>; + interrupt-controller; + #interrupt-cells = <4>; + }; + + dma@7010000 { + compatible = "cix,sky1-dma350"; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0x07010000 0x0 0x10000>; + dma-ranges = <0x0 0x20000000 0x0 0x07010000 0x0 0x00100000>; + clocks = <&clk 9>; + resets = <&rst 15>; + cix,irq-router = <&audss_cru>; + + dma-controller@0 { + compatible = "arm,dma-350"; + reg = <0x0 0x0 0x0 0x10000>; + interrupts = ; + #dma-cells = <1>; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 3a19da74d00c..feff8f9ecb2b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2825,6 +2825,7 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) S: Maintained T: git https://github.com/cixtech/linux-mainline.git F: Documentation/devicetree/bindings/arm/cix.yaml +F: Documentation/devicetree/bindings/dma/cix,sky1-dma350.yaml F: Documentation/devicetree/bindings/mailbox/cix,sky1-mbox.yaml F: arch/arm64/boot/dts/cix/ F: drivers/mailbox/cix-mailbox.c -- 2.54.0