[PATCH 05/10] dt-bindings: serial: add Ambarella UART

[Long Zhao <longzhao@ambarella.com>]

Document the Ambarella UART controller.

Signed-off-by: Long Zhao <longzhao@ambarella.com>
---
 .../bindings/serial/ambarella,uart.yaml       | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/ambarella,uart.yaml

diff --git a/Documentation/devicetree/bindings/serial/ambarella,uart.yaml b/Documentation/devicetree/bindings/serial/ambarella,uart.yaml
new file mode 100644
index 000000000000..43c98499d99b
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/ambarella,uart.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/ambarella,uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ambarella UART
+
+maintainers:
+  - Long Zhao <longzhao@ambarella.com>
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: ambarella,cv75-uart
+          - const: ambarella,uart
+      - const: ambarella,uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    uart_clk: clock {
+        compatible = "fixed-clock";
+        #clock-cells = <0>;
+        clock-frequency = <24000000>;
+    };
+
+    serial@e4000000 {
+        compatible = "ambarella,cv75-uart", "ambarella,uart";
+        reg = <0xe4000000 0x1000>;
+        interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&uart_clk>;
+    };
--
2.34.1

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