[PATCH RFC v2 06/10] dt-bindings: serial: Add Cortina Systems CS7542 UART

[Fil Dunsky via B4 Relay <devnull+filipp.dunsky.gmail.com@kernel.org>]

From: Fil Dunsky <filipp.dunsky@gmail.com>

Add the binding for the UART found in the Cortina Systems CS75xx
(Goldengate G2) SoCs such as the CS7542.

Signed-off-by: Fil Dunsky <filipp.dunsky@gmail.com>
---
 .../bindings/serial/cortina,cs7542-uart.yaml       | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/cortina,cs7542-uart.yaml b/Documentation/devicetree/bindings/serial/cortina,cs7542-uart.yaml
new file mode 100644
index 00000000000..2879a718802
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/cortina,cs7542-uart.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/cortina,cs7542-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cortina UART
+
+maintainers:
+  - Fil Dunsky <filipp.dunsky@gmail.com>
+
+description:
+  The UART found in the Cortina Systems CS7542 (Goldengate G2) SoC. It has
+  transmit and receive FIFOs and a 24-bit baud rate divider running from the
+  peripheral (APB) clock. Other SoCs with the same block, the rest of the
+  CS75xx family and the Cortina Access parts, are to be added with their own
+  compatible string and "cortina,cs7542-uart" as the fallback.
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    const: cortina,cs7542-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>
+
+    serial@f0070110 {
+        compatible = "cortina,cs7542-uart";
+        reg = <0xf0070110 0x30>;
+        interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&apb_clk>;
+    };

-- 
2.53.0