[PATCH v2 1/2] dt-bindings: spi: Add Realtek RTD1625 SPI support

[Yu-Chun Lin <eleanor.lin@realtek.com>]

From: Jyan Chou <jyanchou@realtek.com>

Add DT binding schema for Realtek RTD1625 SPI Flash Controller

Signed-off-by: Jyan Chou <jyanchou@realtek.com>
Co-developed-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
Changes in v2:
- Removed clock and reset header inclusions, and replaced macros with raw
numbers in the dt-binding example to resolve dependencies.
---
 .../bindings/spi/realtek,rtd1625-nor.yaml     | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/realtek,rtd1625-nor.yaml

diff --git a/Documentation/devicetree/bindings/spi/realtek,rtd1625-nor.yaml b/Documentation/devicetree/bindings/spi/realtek,rtd1625-nor.yaml
new file mode 100644
index 000000000000..b967fdac333f
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/realtek,rtd1625-nor.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/realtek,rtd1625-nor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek RTD1625 SPI Flash Controller
+
+maintainers:
+  - Jyan Chou <jyanchou@realtek.com>
+  - Yu-Chun Lin <eleanor.lin@realtek.com>
+
+properties:
+  compatible:
+    enum:
+      - realtek,rtd1625-nor
+
+  reg:
+    maxItems: 3
+
+  reg-names:
+    items:
+      - const: ctrl
+      - const: dma
+      - const: dirmap
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - resets
+  - "#address-cells"
+  - "#size-cells"
+
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi@14b000 {
+      compatible = "realtek,rtd1625-nor";
+      reg = <0x14b000 0x50>, <0x14bf00 0x30>, <0x88100000 0x2000000>;
+      reg-names = "ctrl", "dma", "dirmap";
+      clocks = <&cc 18>;
+      resets = <&cc 26>;
+      pinctrl-0 = <&spi_pins>;
+      pinctrl-names = "default";
+      #address-cells = <1>;
+      #size-cells = <0>;
+    };
-- 
2.43.0