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Message-Id: <20250418-via_intc_binding-v2-1-b649ce737f71@gmail.com>
Date: Fri, 18 Apr 2025 17:57:25 +0400
From: Alexey Charkov <alchark@...il.com>
To: 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,
linux-arm-kernel@...ts.infradead.org, Alexey Charkov <alchark@...il.com>
Subject: [PATCH v2] dt-bindings: interrupt-controller: via,vt8500-intc:
Convert to YAML
Rewrite the textual description for the VIA/WonderMedia interrupt
controller as YAML schema.
The original textual version did not contain information about the
usage of 'interrupts' to describe the connection of a chained
controller to its parent, add it here. A chained controller can
trigger up to 8 different interrupts (IRQ0~7) on its parent.
Signed-off-by: Alexey Charkov <alchark@...il.com>
---
Split the series from v1 into separate bindings patches so as not to
spam all the subsystems with unrelated changes, per Rob's suggestion
Link to v1: https://lore.kernel.org/all/20250416-wmt-updates-v1-2-f9af689cdfc2@gmail.com/
---
.../interrupt-controller/via,vt8500-intc.txt | 16 -----
.../interrupt-controller/via,vt8500-intc.yaml | 76 ++++++++++++++++++++++
MAINTAINERS | 1 +
3 files changed, 77 insertions(+), 16 deletions(-)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.txt
deleted file mode 100644
index 0a4ce1051b0252bbbdeef3288b90e9913d3f16f0..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-VIA/Wondermedia VT8500 Interrupt Controller
------------------------------------------------------
-
-Required properties:
-- compatible : "via,vt8500-intc"
-- reg : Should contain 1 register ranges(address and length)
-- #interrupt-cells : should be <1>
-
-Example:
-
- intc: interrupt-controller@...40000 {
- compatible = "via,vt8500-intc";
- interrupt-controller;
- reg = <0xd8140000 0x10000>;
- #interrupt-cells = <1>;
- };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..bc14c74bf7d57d6da75135cbb4ae27ed59c6b9e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/via,vt8500-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: VIA and WonderMedia SoCs Interrupt Controller
+
+description:
+ This is the interrupt controller used in single-core ARM SoCs made by
+ VIA and WonderMedia (up to and including WM8950). Each block handles
+ up to 64 interrupt sources (level or edge triggered) and can generate
+ up to 8 interrupts to its parent when used in a chained configuration.
+
+maintainers:
+ - Alexey Charkov <alchark@...il.com>
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+ compatible:
+ const: via,vt8500-intc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ items:
+ - description:
+ Interrupt number raised by the IRQ0 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ1 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ2 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ3 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ4 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ5 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ6 output of this controller
+ Only used if this controller is chained
+ - description:
+ Interrupt number raised by the IRQ7 output of this controller
+ Only used if this controller is chained
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - interrupt-controller
+ - '#interrupt-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ interrupt-controller@...40000 {
+ compatible = "via,vt8500-intc";
+ interrupt-controller;
+ reg = <0xd8140000 0x10000>;
+ #interrupt-cells = <1>;
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 96b82704950184bd71623ff41fc4df31e4c7fe87..d3d8e31e547e8775272911df156d6574ae7acdac 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3428,6 +3428,7 @@ M: Krzysztof Kozlowski <krzk@...nel.org>
L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
S: Odd Fixes
F: Documentation/devicetree/bindings/i2c/i2c-wmt.txt
+F: Documentation/devicetree/bindings/interrupt-controller/via,vt8500-intc.yaml
F: arch/arm/boot/dts/vt8500/
F: arch/arm/mach-vt8500/
F: drivers/clocksource/timer-vt8500.c
---
base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8
change-id: 20250418-via_intc_binding-7e9bb2862471
Best regards,
--
Alexey Charkov <alchark@...il.com>
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