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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2021 07:52:31.3361 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a707f98-e75d-45a2-c299-08d97e6718f4 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.35];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT018.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR12MB4897 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Add DT binding document for Nvidia Tegra GPCDMA controller. Signed-off-by: Rajesh Gumasta Signed-off-by: Akhil R --- .../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml new file mode 100644 index 0000000..3dcf5a1 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/nvidia,tegra186-gpc-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nvidia Tegra GPC DMA Controller Device Tree Bindings + +description: | + The Tegra Genernal Purpose Central (GPC) DMA controller is used for faster + data transfers between memory to memory, memory to device and device to + memory. + +maintainers: + - Jon Hunter + - Rajesh Gumasta + +allOf: + - $ref: "dma-controller.yaml#" + +properties: + "#dma-cells": + const: 1 + + compatible: + - enum: + - nvidia,tegra186-gpcdma + - nvidia,tegra194-gpcdma + + reg: + maxItems: 1 + + interrupts: + minItems: 1 + maxItems: 32 + + resets: + maxItems: 1 + + reset-names: + const: gpcdma + + iommus: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - resets + - reset-names + - "#dma-cells" + - iommus + +examples: + - | + gpcdma: dma@2600000 { + compatible = "nvidia,tegra186-gpcdma"; + reg = <0x0 0x2600000 0x0 0x210000>; + resets = <&bpmp TEGRA186_RESET_GPCDMA>; + reset-names = "gpcdma"; + interrupts = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + #dma-cells = <1>; + iommus = <&smmu TEGRA_SID_GPCDMA_0>; + dma-coherent; + }; +... -- 2.7.4