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Message-ID: <20250506220034.2546370-1-robh@kernel.org>
Date: Tue, 6 May 2025 17:00:33 -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>,
Andrei Pistirica <andrei.pistirica@...rochip.com>,
Chandra Mandal <purna.mandal@...rochip.com>
Cc: linux-kernel@...r.kernel.org,
linux-serial@...r.kernel.org,
devicetree@...r.kernel.org
Subject: [PATCH] dt-bindings: serial: Convert microchip,pic32mzda-uart to DT schema
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@...nel.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@...22000 {
- 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@...rochip.com>
+ - Purna Chandra Mandal <purna.mandal@...rochip.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@...22000 {
+ 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
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