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Message-ID: <20240222090738.41628-1-dharma.b@microchip.com>
Date: Thu, 22 Feb 2024 14:37:38 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: <robh@...nel.org>, <tglx@...utronix.de>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
<claudiu.beznea@...on.dev>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC: Dharma Balasubiramani <dharma.b@...rochip.com>, Conor Dooley
<conor.dooley@...rochip.com>
Subject: [PATCH v4] 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>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
---
Changelog
v3 -> v4
- Move the allOf after "atmel,external-irqs" as it handles its restriction.
v2 -> v3
- Add constraints to the "atmel,external-irqs" property.
- Move 'reg' before 'interrupt-controller' in the example.
v1 -> v2
- Drop the '|' as there is no formatting to preserve.
- Remove unnecessary marketing statement from description.
- Drop the description for interrupts and reg, it's obvious.
- Put reg after compatible.
- Drop comment in example.
- Drop the example of device that is wired to an AIC as it's(dma) binding is
not yet available.
---
.../interrupt-controller/atmel,aic.txt | 43 ---------
.../interrupt-controller/atmel,aic.yaml | 89 +++++++++++++++++++
2 files changed, 89 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..d4658fe3867c
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/atmel,aic.yaml
@@ -0,0 +1,89 @@
+# 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.
+
+properties:
+ compatible:
+ enum:
+ - atmel,at91rm9200-aic
+ - atmel,sama5d2-aic
+ - atmel,sama5d3-aic
+ - atmel,sama5d4-aic
+ - microchip,sam9x60-aic
+
+ reg:
+ maxItems: 1
+
+ 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:
+ maxItems: 1
+
+ atmel,external-irqs:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: u32 array of external irqs.
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: atmel,at91rm9200-aic
+ then:
+ properties:
+ atmel,external-irqs:
+ minItems: 1
+ maxItems: 7
+ else:
+ properties:
+ atmel,external-irqs:
+ minItems: 1
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupt-controller
+ - "#interrupt-cells"
+ - atmel,external-irqs
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ interrupt-controller@...ff000 {
+ compatible = "atmel,at91rm9200-aic";
+ reg = <0xfffff000 0x200>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ atmel,external-irqs = <31>;
+ };
+...
base-commit: 4f5e5092fdbf5cec6bedc19fbe69cce4f5f08372
--
2.25.1
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