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Message-Id: <20250225-gtm-yaml-v1-1-de5da7299430@posteo.net>
Date: Tue, 25 Feb 2025 12:50:43 +0100
From: J. Neuschäfer via B4 Relay <devnull+j.ne.posteo.net@...nel.org>
To: Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
J. Neuschäfer <j.ne@...teo.net>
Subject: [PATCH] dt-bindings: timer: Convert fsl,gtm to YAML
From: "J. Neuschäfer" <j.ne@...teo.net>
Convert fsl,gtm.txt to YAML so that device trees using a Freescale
General-purpose Timers Module can be properly validated.
Signed-off-by: J. Neuschäfer <j.ne@...teo.net>
---
.../devicetree/bindings/timer/fsl,gtm.txt | 30 --------
.../devicetree/bindings/timer/fsl,gtm.yaml | 83 ++++++++++++++++++++++
2 files changed, 83 insertions(+), 30 deletions(-)
diff --git a/Documentation/devicetree/bindings/timer/fsl,gtm.txt b/Documentation/devicetree/bindings/timer/fsl,gtm.txt
deleted file mode 100644
index fc1c571f74123d2293bf5c3af3197000d46a07ee..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/timer/fsl,gtm.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-* Freescale General-purpose Timers Module
-
-Required properties:
- - compatible : should be
- "fsl,<chip>-gtm", "fsl,gtm" for SOC GTMs
- "fsl,<chip>-qe-gtm", "fsl,qe-gtm", "fsl,gtm" for QE GTMs
- "fsl,<chip>-cpm2-gtm", "fsl,cpm2-gtm", "fsl,gtm" for CPM2 GTMs
- - reg : should contain gtm registers location and length (0x40).
- - interrupts : should contain four interrupts.
- - clock-frequency : specifies the frequency driving the timer.
-
-Example:
-
-timer@500 {
- compatible = "fsl,mpc8360-gtm", "fsl,gtm";
- reg = <0x500 0x40>;
- interrupts = <90 8 78 8 84 8 72 8>;
- interrupt-parent = <&ipic>;
- /* filled by u-boot */
- clock-frequency = <0>;
-};
-
-timer@440 {
- compatible = "fsl,mpc8360-qe-gtm", "fsl,qe-gtm", "fsl,gtm";
- reg = <0x440 0x40>;
- interrupts = <12 13 14 15>;
- interrupt-parent = <&qeic>;
- /* filled by u-boot */
- clock-frequency = <0>;
-};
diff --git a/Documentation/devicetree/bindings/timer/fsl,gtm.yaml b/Documentation/devicetree/bindings/timer/fsl,gtm.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..1f35f1ee0be2a947ad241f4ba0be391e7e0d0882
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/fsl,gtm.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/fsl,gtm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale General-purpose Timers Module
+
+maintainers:
+ - J. Neuschäfer <j.ne@...teo.net>
+
+properties:
+ compatible:
+ oneOf:
+ # for SoC GTMs
+ - items:
+ - enum:
+ - fsl,mpc8308-gtm
+ - fsl,mpc8313-gtm
+ - fsl,mpc8315-gtm
+ - fsl,mpc8360-gtm
+ - const: fsl,gtm
+
+ # for QE GTMs
+ - items:
+ - enum:
+ - fsl,mpc8360-qe-gtm
+ - fsl,mpc8569-qe-gtm
+ - const: fsl,qe-gtm
+ - const: fsl,gtm
+
+ # for CPM2 GTMs (no known examples)
+ - items:
+ # - enum:
+ # - fsl,<chip>-cpm2-gtm
+ - const: fsl,cpm2-gtm
+ - const: fsl,gtm
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ items:
+ - description: Interrupt for timer 1 (e.g. GTM1 or GTM5)
+ - description: Interrupt for timer 2 (e.g. GTM2 or GTM6)
+ - description: Interrupt for timer 3 (e.g. GTM3 or GTM7)
+ - description: Interrupt for timer 4 (e.g. GTM4 or GTM8)
+
+ clock-frequency: true
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clock-frequency
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ timer@500 {
+ compatible = "fsl,mpc8360-gtm", "fsl,gtm";
+ reg = <0x500 0x40>;
+ interrupts = <90 IRQ_TYPE_LEVEL_LOW>,
+ <78 IRQ_TYPE_LEVEL_LOW>,
+ <84 IRQ_TYPE_LEVEL_LOW>,
+ <72 IRQ_TYPE_LEVEL_LOW>;
+ /* filled by u-boot */
+ clock-frequency = <0>;
+ };
+
+ - |
+ timer@440 {
+ compatible = "fsl,mpc8360-qe-gtm", "fsl,qe-gtm", "fsl,gtm";
+ reg = <0x440 0x40>;
+ interrupts = <12>, <13>, <14>, <15>;
+ /* filled by u-boot */
+ clock-frequency = <0>;
+ };
+
+...
---
base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
change-id: 20250210-gtm-yaml-b41a9475d0b3
Best regards,
--
J. Neuschäfer <j.ne@...teo.net>
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