linux-kernel - [PATCH v3 1/4] dt-bindings: dmaengine: Add doc for tegra gpcdma

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Message-ID: <1630044294-21169-2-git-send-email-akhilrajeev@nvidia.com>
Date:   Fri, 27 Aug 2021 11:34:51 +0530
From:   Akhil R <akhilrajeev@...dia.com>
To:     <rgumasta@...dia.com>
CC:     <dan.j.williams@...el.com>, <dmaengine@...r.kernel.org>,
        <jonathanh@...dia.com>, <kyarlagadda@...dia.com>,
        <ldewangan@...dia.com>, <linux-kernel@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <p.zabel@...gutronix.de>,
        <thierry.reding@...il.com>, <vkoul@...nel.org>,
        Akhil R <akhilrajeev@...dia.com>
Subject: [PATCH v3 1/4] dt-bindings: dmaengine: Add doc for tegra gpcdma

Add DT binding document for Nvidia Tegra GPCDMA controller.

Signed-off-by: Rajesh Gumasta <rgumasta@...dia.com>
Signed-off-by: Akhil R <akhilrajeev@...dia.com>
---
 .../bindings/dma/nvidia,tegra-gpc-dma.yaml         | 99 ++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra-gpc-dma.yaml

diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra-gpc-dma.yaml
new file mode 100644
index 0000000..39827ab
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra-gpc-dma.yaml
@@ -0,0 +1,99 @@
+# 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 controller is a general purpose dma used for faster data
+  transfers between memory to memory, memory to device and device to memory.
+  Terms 'dma' and 'gpcdma' can be used interchangeably.
+
+maintainers:
+  - Jon Hunter <jonathanh@...dia.com>
+  - Rajesh Gumasta <rgumasta@...dia.com>
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  "#dma-cells":
+    const: 1
+
+  compatible:
+    - enum:
+      - nvidia,tegra186-gpcdma
+      - nvidia,tegra194-gpcdma
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: gpcdma
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - resets
+  - reset-names
+  - "#dma-cells"
+  - iommus
+
+examples:
+  - |
+    gpcdma: dma@...0000 {
+	  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