linux-kernel - [PATCH v6 tty-next 1/2] dt-bindings: serial: ni,ni16650: add bindings

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Date:   Mon, 23 Oct 2023 16:04:56 -0500
From:   Brenda Streiff <brenda.streiff@...com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Brenda Streiff <brenda.streiff@...com>,
        Gratian Crisan <gratian.crisan@...com>,
        Jason Smith <jason.smith@...com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH v6 tty-next 1/2] dt-bindings: serial: ni,ni16650: add bindings

Add bindings for the NI 16550 UART.

Signed-off-by: Brenda Streiff <brenda.streiff@...com>
Cc: Gratian Crisan <gratian.crisan@...com>
Cc: Jason Smith <jason.smith@...com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/serial/ni,ni16550.yaml           | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/ni,ni16550.yaml

diff --git a/Documentation/devicetree/bindings/serial/ni,ni16550.yaml b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml
new file mode 100644
index 000000000000..72ab125dd892
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/ni,ni16550.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/ni,ni16550.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NI 16550 asynchronous serial interface (UART)
+
+maintainers:
+  - Brenda Streiff <brenda.streiff@...com>
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    const: ni,ni16550
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  ni,serial-port-mode:
+    description: Indicates whether this is an RS-232 or RS-485 serial port.
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [ RS-232, RS-485 ]
+    default: RS-485
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    serial@...00000 {
+      compatible = "ni,ni16550";
+      reg = <0x80000000 0x8>;
+      interrupts = <0 30 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&clk_uart>;
+      ni,serial-port-mode = "RS-232";
+    };
+...
-- 
2.30.2