linux-kernel - [PATCH 1/2] dt-bindings: interrupt-controller: apple,aic2: Add AICv3

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20260125-irq-apple-aic3-v1-1-a2afe66a6ab9@jannau.net>
Date: Sun, 25 Jan 2026 12:08:45 +0100
From: Janne Grunau <j@...nau.net>
To: Sven Peter <sven@...nel.org>, Neal Gompa <neal@...pa.dev>, 
 Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Janne Grunau <j@...nau.net>
Subject: [PATCH 1/2] dt-bindings: interrupt-controller: apple,aic2: Add
 AICv3

AIC version 3 as found on the Apple M3 (t8122) is very similar to AICv2
in its base functionality. It can use the same device tree bindings as
AICv2 so add it to the AICv2 bindings.
This interrupt controller is used on all Apple SoCs starting with M3 up
to at least M5.
The only apparent difference is the increased IRQ config offset. Apple's
device tree codes this new offset as property of the "aic" node but the
value stayed constant for all SoCs with "aic,3". Since the SoC specific
compatible "apple,t8122-aic3" will be used in the driver this offset can
remain a driver implementation detail.

Signed-off-by: Janne Grunau <j@...nau.net>
---
 .../bindings/interrupt-controller/apple,aic2.yaml  | 29 +++++++++++++++-------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml
index ee5a0dfff437816056bda0de5523bf38be4f49ba..933e134d82bb599a68707ba34e04ea55d61050b9 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml
@@ -4,10 +4,10 @@
 $id: http://devicetree.org/schemas/interrupt-controller/apple,aic2.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Apple Interrupt Controller 2
+title: Apple Interrupt Controller 2 and 3
 
 maintainers:
-  - Hector Martin <marcan@...can.st>
+  - Janne Grunau <j@...nau.net>
 
 description: |
   The Apple Interrupt Controller 2 is a simple interrupt controller present on
@@ -28,14 +28,23 @@ description: |
   which do not go through a discrete interrupt controller. It also handles
   FIQ-based Fast IPIs.
 
+  The Apple Interrupt Controller 3 is in its base functionality very similar to
+  the Apple Interrupt Controller 2 and uses the same device tree bindings. It is
+  found on Apple ARM SoCs platforms starting with t8122 (M3).
+
 properties:
   compatible:
-    items:
-      - enum:
-          - apple,t8112-aic
-          - apple,t6000-aic
-          - apple,t6020-aic
-      - const: apple,aic2
+    oneOf:
+      - items:
+          - enum:
+              - apple,t8112-aic
+              - apple,t6000-aic
+              - apple,t6020-aic
+          - const: apple,aic2
+      - items:
+          - enum:
+              - apple,t6030-aic3
+          - const: apple,t8122-aic3
 
   interrupt-controller: true
 
@@ -117,7 +126,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: apple,t8112-aic
+            enum:
+              - apple,t8112-aic
+              - apple,t8122-aic3
     then:
       properties:
         '#interrupt-cells':

-- 
2.52.0