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Message-ID: <20240208092015.263210-1-dharma.b@microchip.com>
Date: Thu, 8 Feb 2024 14:50:15 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: <tglx@...utronix.de>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
<claudiu.beznea@...on.dev>, <dharma.b@...rochip.com>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] dt-bindings: interrupt-controller: Convert Atmel AIC to json-schema
Convert the Atmel AIC binding document to DT schema format using
json-schema.
Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
---
Note: I get the following warnings on latest kernel but not in 6.7.
Should I be worried?
usage: yamllint [-h] [-] [-c CONFIG_FILE | -d CONFIG_DATA] [--list-files] [-f {parsable,standard,colored,github,auto}] [-s] [--no-warnings] [-v] [FILE_OR_DIR [FILE_OR_DIR ...]]
yamllint: error: one of the arguments FILE_OR_DIR - is required
.../interrupt-controller/atmel,aic.txt | 43 ---------
.../interrupt-controller/atmel,aic.yaml | 88 +++++++++++++++++++
2 files changed, 88 insertions(+), 43 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml
diff --git a/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt b/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt
deleted file mode 100644
index 7079d44bf3ba..000000000000
--- a/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-* Advanced Interrupt Controller (AIC)
-
-Required properties:
-- compatible: Should be:
- - "atmel,<chip>-aic" where <chip> can be "at91rm9200", "sama5d2",
- "sama5d3" or "sama5d4"
- - "microchip,<chip>-aic" where <chip> can be "sam9x60"
-
-- interrupt-controller: Identifies the node as an interrupt controller.
-- #interrupt-cells: The number of cells to define the interrupts. It should be 3.
- The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
- The second cell is used to specify flags:
- bits[3:0] trigger type and level flags:
- 1 = low-to-high edge triggered.
- 2 = high-to-low edge triggered.
- 4 = active high level-sensitive.
- 8 = active low level-sensitive.
- Valid combinations are 1, 2, 3, 4, 8.
- Default flag for internal sources should be set to 4 (active high).
- The third cell is used to specify the irq priority from 0 (lowest) to 7
- (highest).
-- reg: Should contain AIC registers location and length
-- atmel,external-irqs: u32 array of external irqs.
-
-Examples:
- /*
- * AIC
- */
- aic: interrupt-controller@...ff000 {
- compatible = "atmel,at91rm9200-aic";
- interrupt-controller;
- #interrupt-cells = <3>;
- reg = <0xfffff000 0x200>;
- };
-
- /*
- * An interrupt generating device that is wired to an AIC.
- */
- dma: dma-controller@...fec00 {
- compatible = "atmel,at91sam9g45-dma";
- reg = <0xffffec00 0x200>;
- interrupts = <21 4 5>;
- };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml b/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml
new file mode 100644
index 000000000000..396eac53da3a
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/atmel,aic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Advanced Interrupt Controller (AIC)
+
+maintainers:
+ - Nicolas Ferre <nicolas.ferre@...rochip.com>
+ - Dharma balasubiramani <dharma.b@...rochip.com>
+
+description: |
+ The Advanced Interrupt Controller (AIC) is an 8-level priority, individually
+ maskable, vectored interrupt controller providing handling of up to one
+ hundred and twenty-eight interrupt sources. It is designed to substantially
+ reduce the software and real-time overhead in handling internal and external
+ interrupts.
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+ compatible:
+ enum:
+ - atmel,at91rm9200-aic
+ - atmel,sama5d2-aic
+ - atmel,sama5d3-aic
+ - atmel,sama5d4-aic
+ - microchip,sam9x60-aic
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 3
+ description: |
+ The 1st cell is the IRQ number (Peripheral IDentifier on datasheet).
+ The 2nd cell specifies flags:
+ bits[3:0] trigger type and level flags:
+ 1 = low-to-high edge triggered.
+ 2 = high-to-low edge triggered.
+ 4 = active high level-sensitive.
+ 8 = active low level-sensitive.
+ Valid combinations: 1, 2, 3, 4, 8.
+ Default for internal sources: 4 (active high).
+ The 3rd cell specifies irq priority from 0 (lowest) to 7 (highest).
+
+ interrupts:
+ description: Interrupt source of the parent interrupt controller.
+ maxItems: 1
+
+ reg:
+ description: Specifies base physical address(s) and size of the AIC registers.
+ maxItems: 1
+
+ atmel,external-irqs:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: u32 array of external irqs.
+
+required:
+ - compatible
+ - interrupt-controller
+ - "#interrupt-cells"
+ - reg
+ - atmel,external-irqs
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ /* AIC */
+ aic: interrupt-controller@...ff000 {
+ compatible = "atmel,at91rm9200-aic";
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ reg = <0xfffff000 0x200>;
+ atmel,external-irqs = <31>;
+ };
+
+ - |
+ /* An interrupt generating device that is wired to an AIC. */
+ dma: dma-controller@...fec00 {
+ compatible = "atmel,at91sam9g45-dma";
+ #dma-cells = <2>;
+ reg = <0xffffec00 0x200>;
+ interrupts = <21 4 5>;
+ };
+...
base-commit: 047371968ffc470769f541d6933e262dc7085456
--
2.25.1
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