linux-kernel - [PATCH 1/3] dt-bindings: interrupt-controller: arm,gic-v3-its: Add quirk to support 32 bit addressable range

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Message-ID: <30a6bed1494b7bb41466f68533d40bd81f5ee4ab.1747368554.git.adrianhoyin.ng@altera.com>
Date: Fri, 16 May 2025 12:13:32 +0800
From: adrianhoyin.ng@...era.com
To: dinguyen@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	maz@...nel.org,
	tglx@...utronix.de,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: adrianhoyin.ng@...era.com,
	Matthew Gerlach <matthew.gerlach@...rera.com>
Subject: [PATCH 1/3] dt-bindings: interrupt-controller: arm,gic-v3-its: Add quirk to support 32 bit addressable range

From: Adrian Ng Ho Yin <adrianhoyin.ng@...era.com>

Add quirk to configure gfp flags to only allocate buffers within 32 bit
addressable range to support devices that cannot support the full 64 bit
address range.

Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@...era.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@...rera.com>
---
 .../devicetree/bindings/interrupt-controller/arm,gic-v3.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
index f3247a47f9ee..bd20d857c96d 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml
@@ -225,6 +225,11 @@ patternProperties:
         minItems: 2
         maxItems: 2
 
+      dma-32bit-quirk:
+        type: boolean
+        description:
+          Set when supported addressable range is only 32 bits.
+
     required:
       - compatible
       - msi-controller
-- 
2.49.GIT