From b2f06783081859b200a853f9682d831b6fc9982d Mon Sep 17 00:00:00 2001
From: CL Wang <cl634@andestech.com>
Date: Mon, 15 Dec 2025 21:23:47 +0800
Subject: [PATCH] spi: dt-bindings: Add support for ATCSPI200 SPI controller

Document devicetree bindings for the Andes ATCSPI200 SPI controller.

Signed-off-by: CL Wang <cl634@andestech.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251215132349.513843-2-cl634@andestech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 .../bindings/spi/andestech,ae350-spi.yaml     | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/andestech,ae350-spi.yaml

diff --git a/Documentation/devicetree/bindings/spi/andestech,ae350-spi.yaml b/Documentation/devicetree/bindings/spi/andestech,ae350-spi.yaml
new file mode 100644
index 0000000000000..78093468dd5e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/andestech,ae350-spi.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/andestech,ae350-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Andes ATCSPI200 SPI controller
+
+maintainers:
+  - CL Wang <cl634@andestech.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - andestech,qilai-spi
+          - const: andestech,ae350-spi
+      - const: andestech,ae350-spi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  num-cs:
+    description: Number of chip selects supported
+    maxItems: 1
+
+  dmas:
+    items:
+      - description: Transmit FIFO DMA channel
+      - description: Receive FIFO DMA channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+patternProperties:
+  "@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      spi-rx-bus-width:
+        enum: [1, 4]
+
+      spi-tx-bus-width:
+        enum: [1, 4]
+
+allOf:
+  - $ref: spi-controller.yaml#
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - dmas
+  - dma-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi@f0b00000 {
+        compatible = "andestech,ae350-spi";
+        reg = <0xf0b00000 0x100>;
+        clocks = <&clk_spi>;
+        dmas = <&dma0 0>, <&dma0 1>;
+        dma-names = "tx", "rx";
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash@0 {
+            compatible = "jedec,spi-nor";
+            reg = <0>;
+            spi-tx-bus-width = <4>;
+            spi-rx-bus-width = <4>;
+            spi-cpol;
+            spi-cpha;
+        };
+    };
-- 
2.47.3