Convert the Microchip PIC32 UART binding to DT schema. The binding was
unclear there are 3 interrupts. The functions were determined from the
driver. The 'cts-gpios' property is covered by serial.yaml schema.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../bindings/serial/microchip,pic32-uart.txt  | 29 ----------
 .../serial/microchip,pic32mzda-uart.yaml      | 53 +++++++++++++++++++
 2 files changed, 53 insertions(+), 29 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt
 create mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.yaml

diff --git a/Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt b/Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt
deleted file mode 100644
index c8dd440e9747..000000000000
--- a/Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-* Microchip Universal Asynchronous Receiver Transmitter (UART)
-
-Required properties:
-- compatible: Should be "microchip,pic32mzda-uart"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt
-- clocks: Phandle to the clock.
-          See: Documentation/devicetree/bindings/clock/clock-bindings.txt
-- pinctrl-names: A pinctrl state names "default" must be defined.
-- pinctrl-0: Phandle referencing pin configuration of the UART peripheral.
-             See: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-
-Optional properties:
-- cts-gpios: CTS pin for UART
-
-Example:
-	uart1: serial@1f822000 {
-		compatible = "microchip,pic32mzda-uart";
-		reg = <0x1f822000 0x50>;
-		interrupts = <112 IRQ_TYPE_LEVEL_HIGH>,
-			<113 IRQ_TYPE_LEVEL_HIGH>,
-			<114 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&rootclk PB2CLK>;
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_uart1
-				&pinctrl_uart1_cts
-				&pinctrl_uart1_rts>;
-		cts-gpios = <&gpio1 15 0>;
-	};
diff --git a/Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.yaml b/Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.yaml
new file mode 100644
index 000000000000..44b2d5a289f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/microchip,pic32mzda-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip PIC32 UART
+
+maintainers:
+  - Andrei Pistirica <andrei.pistirica@microchip.com>
+  - Purna Chandra Mandal <purna.mandal@microchip.com>
+
+allOf:
+  - $ref: /schemas/serial.yaml#
+
+properties:
+  compatible:
+    const: microchip,pic32mzda-uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: Fault
+      - description: RX
+      - description: TX
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/microchip,pic32-clock.h>
+
+    serial@1f822000 {
+        compatible = "microchip,pic32mzda-uart";
+        reg = <0x1f822000 0x50>;
+        interrupts = <112 IRQ_TYPE_LEVEL_HIGH>,
+                    <113 IRQ_TYPE_LEVEL_HIGH>,
+                    <114 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&rootclk PB2CLK>;
+        cts-gpios = <&gpio1 15 0>;
+    };
-- 
2.47.2

On Tue, 06 May 2025 17:00:33 -0500, Rob Herring (Arm) wrote:
> Convert the Microchip PIC32 UART binding to DT schema. The binding was
> unclear there are 3 interrupts. The functions were determined from the
> driver. The 'cts-gpios' property is covered by serial.yaml schema.
> 
> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
> ---
>  .../bindings/serial/microchip,pic32-uart.txt  | 29 ----------
>  .../serial/microchip,pic32mzda-uart.yaml      | 53 +++++++++++++++++++
>  2 files changed, 53 insertions(+), 29 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt
>  create mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/serial/microchip,pic32mzda-uart.example.dtb: serial@1f822000 (microchip,pic32mzda-uart): Unevaluated properties are not allowed ('cts-gpios' was unexpected)
	from schema $id: http://devicetree.org/schemas/microchip,pic32mzda-uart.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250506220034.2546370-1-robh@kernel.org

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.