[PATCH v4 1/4] dt-bindings: dmaengine: Add doc for tegra gpcdma

From: Akhil R
Date: Wed Sep 08 2021 - 10:33:22 EST


Add DT binding document for Nvidia Tegra GPCDMA controller.

Signed-off-by: Rajesh Gumasta <rgumasta@xxxxxxxxxx>
Signed-off-by: Akhil R <akhilrajeev@xxxxxxxxxx>
---
.../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 106 +++++++++++++++++++++
1 file changed, 106 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..00c5582
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
@@ -0,0 +1,106 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/nvidia,tegra-gpc-dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nvidia Tegra GPC DMA Controller Device Tree Bindings
+
+description: |
+ Tegra GPC DMA is the Genernal Purpose Central (GPC) DMA controller used for faster data
+ transfers between memory to memory, memory to device and device to memory.
+
+maintainers:
+ - Jon Hunter <jonathanh@xxxxxxxxxx>
+ - Rajesh Gumasta <rgumasta@xxxxxxxxxx>
+
+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
+
+ nvidia,stream-id:
+ description: |
+ stream-id corresponding to GPC DMA clients.
+ Defaults to TEGRA186_SID_GPCDMA_0 if not given
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - resets
+ - reset-names
+ - "#dma-cells"
+ - iommus
+
+optional:
+ - nvidia,stream-id
+
+examples:
+ - |
+ gpcdma: dma@2600000 {
+ compatible = "nvidia,tegra186-gpcdma";
+ reg = <0x0 0x2600000 0x0 0x210000>;
+ resets = <&bpmp TEGRA186_RESET_GPCDMA>;
+ reset-names = "gpcdma";
+ interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH
+ GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <1>;
+ iommus = <&smmu TEGRA_SID_GPCDMA_0>;
+ dma-coherent;
+ };
+...
--
2.7.4