dt-bindings: dma: adi,axi-dmac: convert to yaml schema

Convert the AXI DMAC bindings from .txt to .yaml.

Acked-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20241216-axi-dma-dt-yaml-v3-1-7b994710c43f@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/dma/adi,axi-dmac.yaml b/Documentation/devicetree/bindings/dma/adi,axi-dmac.yaml
new file mode 100644
index 000000000000..b1f4bdcab4fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/adi,axi-dmac.yaml
@@ -0,0 +1,139 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/adi,axi-dmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AXI-DMAC DMA controller
+
+description: |
+  FPGA-based DMA controller designed for use with high-speed converter hardware.
+
+  http://analogdevicesinc.github.io/hdl/library/axi_dmac/index.html
+
+maintainers:
+  - Nuno Sa <nuno.sa@analog.com>
+
+additionalProperties: false
+
+properties:
+  compatible:
+    const: adi,axi-dmac-1.00.a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#dma-cells":
+    const: 1
+
+  adi,channels:
+    type: object
+    description: This sub-node must contain a sub-node for each DMA channel.
+    additionalProperties: false
+
+    properties:
+      "#size-cells":
+        const: 0
+      "#address-cells":
+        const: 1
+
+    patternProperties:
+      "^dma-channel@[0-9a-f]+$":
+        type: object
+        description:
+          DMA channel properties based on HDL compile-time configuration.
+        additionalProperties: false
+
+        properties:
+          reg:
+            maxItems: 1
+
+          adi,source-bus-width:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Width of the source bus in bits.
+            enum: [8, 16, 32, 64, 128]
+
+          adi,destination-bus-width:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Width of the destination bus in bits.
+            enum: [8, 16, 32, 64, 128]
+
+          adi,source-bus-type:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: |
+              Type of the source bus.
+
+              0: Memory mapped AXI interface
+              1: Streaming AXI interface
+              2: FIFO interface
+            enum: [0, 1, 2]
+
+          adi,destination-bus-type:
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Type of the destination bus (see adi,source-bus-type).
+            enum: [0, 1, 2]
+
+          adi,length-width:
+            deprecated: true
+            $ref: /schemas/types.yaml#/definitions/uint32
+            description: Width of the DMA transfer length register.
+
+          adi,cyclic:
+            deprecated: true
+            type: boolean
+            description:
+              Must be set if the channel supports hardware cyclic DMA transfers.
+
+          adi,2d:
+            deprecated: true
+            type: boolean
+            description:
+              Must be set if the channel supports hardware 2D DMA transfers.
+
+        required:
+          - reg
+          - adi,source-bus-width
+          - adi,destination-bus-width
+          - adi,source-bus-type
+          - adi,destination-bus-type
+
+    required:
+      - "#size-cells"
+      - "#address-cells"
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - "#dma-cells"
+  - adi,channels
+
+examples:
+  - |
+    dma-controller@7c420000 {
+        compatible = "adi,axi-dmac-1.00.a";
+        reg = <0x7c420000 0x10000>;
+        interrupts = <0 57 0>;
+        clocks = <&clkc 16>;
+        #dma-cells = <1>;
+
+        adi,channels {
+            #size-cells = <0>;
+            #address-cells = <1>;
+
+            dma-channel@0 {
+                reg = <0>;
+                adi,source-bus-width = <32>;
+                adi,source-bus-type = <0>; /* Memory mapped */
+                adi,destination-bus-width = <64>;
+                adi,destination-bus-type = <2>; /* FIFO */
+            };
+        };
+    };