linux-kernel - [PATCH] dt-bindings: timer: Convert jcore,pit to DT schema

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Message-ID: <20250506022253.2587999-1-robh@kernel.org>
Date: Mon,  5 May 2025 21:22:52 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Rich Felker <dalias@...c.org>
Cc: linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH] dt-bindings: timer: Convert jcore,pit to DT schema

Convert the J-Core PIT Timer binding to DT schema format. It's a
straight-forward conversion.

Since the 'reg' entries are based on number of cores, we can't put
constraints on it.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../devicetree/bindings/timer/jcore,pit.txt   | 24 -----------
 .../devicetree/bindings/timer/jcore,pit.yaml  | 43 +++++++++++++++++++
 2 files changed, 43 insertions(+), 24 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/timer/jcore,pit.txt
 create mode 100644 Documentation/devicetree/bindings/timer/jcore,pit.yaml

diff --git a/Documentation/devicetree/bindings/timer/jcore,pit.txt b/Documentation/devicetree/bindings/timer/jcore,pit.txt
deleted file mode 100644
index af5dd35469d7..000000000000
--- a/Documentation/devicetree/bindings/timer/jcore,pit.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-J-Core Programmable Interval Timer and Clocksource
-
-Required properties:
-
-- compatible: Must be "jcore,pit".
-
-- reg: Memory region(s) for timer/clocksource registers. For SMP,
-  there should be one region per cpu, indexed by the sequential,
-  zero-based hardware cpu number.
-
-- interrupts: An interrupt to assign for the timer. The actual pit
-  core is integrated with the aic and allows the timer interrupt
-  assignment to be programmed by software, but this property is
-  required in order to reserve an interrupt number that doesn't
-  conflict with other devices.
-
-
-Example:
-
-timer@200 {
-	compatible = "jcore,pit";
-	reg = < 0x200 0x30 0x500 0x30 >;
-	interrupts = < 0x48 >;
-};
diff --git a/Documentation/devicetree/bindings/timer/jcore,pit.yaml b/Documentation/devicetree/bindings/timer/jcore,pit.yaml
new file mode 100644
index 000000000000..9e6e25b75293
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/jcore,pit.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/jcore,pit.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: J-Core Programmable Interval Timer and Clocksource
+
+maintainers:
+  - Rich Felker <dalias@...c.org>
+
+properties:
+  compatible:
+    const: jcore,pit
+
+  reg:
+    description:
+      Memory region(s) for timer/clocksource registers. For SMP, there should be
+      one region per cpu, indexed by the sequential, zero-based hardware cpu
+      number.
+
+  interrupts:
+    description:
+      An interrupt to assign for the timer. The actual pit core is integrated
+      with the aic and allows the timer interrupt assignment to be programmed by
+      software, but this property is required in order to reserve an interrupt
+      number that doesn't conflict with other devices.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    timer@200 {
+        compatible = "jcore,pit";
+        reg = <0x200 0x30 0x500 0x30>;
+        interrupts = <0x48>;
+    };
-- 
2.47.2