linux-kernel - [PATCH] dt-bindings: serial: Convert arm,sbsa-uart to DT schema

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Message-ID: <20250506220016.2545637-1-robh@kernel.org>
Date: Tue,  6 May 2025 17:00:15 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Andre Przywara <andre.przywara@....com>
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH] dt-bindings: serial: Convert arm,sbsa-uart to DT schema

Convert the Arm SBSA UART binding to DT schema. It is a straight-forward
conversion.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../bindings/serial/arm,sbsa-uart.yaml        | 38 +++++++++++++++++++
 .../bindings/serial/arm_sbsa_uart.txt         | 10 -----
 2 files changed, 38 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/serial/arm,sbsa-uart.yaml
 delete mode 100644 Documentation/devicetree/bindings/serial/arm_sbsa_uart.txt

diff --git a/Documentation/devicetree/bindings/serial/arm,sbsa-uart.yaml b/Documentation/devicetree/bindings/serial/arm,sbsa-uart.yaml
new file mode 100644
index 000000000000..68e3fd64b1d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/arm,sbsa-uart.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+---
+$id: http://devicetree.org/schemas/serial/arm,sbsa-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM SBSA UART
+
+maintainers:
+  - Andre Przywara <andre.przywara@....com>
+
+description:
+  This UART uses a subset of the PL011 registers and consequently lives in the
+  PL011 driver. It's baudrate and other communication parameters cannot be
+  adjusted at runtime, so it lacks a clock specifier here.
+
+allOf:
+  - $ref: /schemas/serial/serial.yaml#
+
+properties:
+  compatible:
+    const: arm,sbsa-uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  current-speed:
+    description: fixed baud rate set by the firmware
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - current-speed
+
+unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/serial/arm_sbsa_uart.txt b/Documentation/devicetree/bindings/serial/arm_sbsa_uart.txt
deleted file mode 100644
index 4163e7eb7763..000000000000
--- a/Documentation/devicetree/bindings/serial/arm_sbsa_uart.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-* ARM SBSA defined generic UART
-This UART uses a subset of the PL011 registers and consequently lives
-in the PL011 driver. It's baudrate and other communication parameters
-cannot be adjusted at runtime, so it lacks a clock specifier here.
-
-Required properties:
-- compatible: must be "arm,sbsa-uart"
-- reg: exactly one register range
-- interrupts: exactly one interrupt specifier
-- current-speed: the (fixed) baud rate set by the firmware
-- 
2.47.2