linux-kernel - [PATCH 1/2] dt-bindings: spi: Add support for ATCSPI200 SPI controller

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Message-ID: <20251112034724.1977630-2-cl634@andestech.com>
Date: Wed, 12 Nov 2025 11:47:23 +0800
From: CL Wang <cl634@...estech.com>
To: <cl634@...estech.com>, <broonie@...nel.org>, <linux-spi@...r.kernel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <tim609@...estech.com>
Subject: [PATCH 1/2] dt-bindings: spi: Add support for ATCSPI200 SPI controller

Document devicetree bindings for Andes ATCSPI200 SPI controller.

Signed-off-by: CL Wang <cl634@...estech.com>
---
 .../bindings/spi/andestech,qilai-spi.yaml     | 84 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 90 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml

diff --git a/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml b/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
new file mode 100644
index 000000000000..db065062a2af
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/andestech,qilai-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Andes ATCSPI200 SPI controller
+
+maintainers:
+  - CL Wang <cl634@...estech.com>
+
+properties:
+  compatible:
+    const: andestech,qilai-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: spi_tx
+      - const: spi_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:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      spi@...00000 {
+        compatible = "andestech,qilai-spi";
+        reg = <0x0 0xf0b00000 0x0 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        clocks = <&clk_spi>;
+        dmas = <&dma0 0>, <&dma0 1>;
+        dma-names = "spi_tx", "spi_rx";
+
+        flash@0 {
+          compatible = "jedec,spi-nor";
+          reg = <0x0>;
+          spi-tx-bus-width = <0x4>;
+          spi-rx-bus-width = <0x4>;
+          spi-cpol;
+          spi-cpha;
+        };
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index dd99c073a369..55e31996df03 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1803,6 +1803,12 @@ S:	Supported
 F:	drivers/clk/analogbits/*
 F:	include/linux/clk/analogbits*
 
+ANDES ATCSPI200 SPI DRIVER
+M:	CL Wang <cl634@...estech.com>
+S:	Supported
+F:	Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
+F:	drivers/spi/spi-atcspi200.c
+
 ANDROID DRIVERS
 M:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
 M:	Arve Hjønnevåg <arve@...roid.com>
-- 
2.34.1