linux-kernel - [PATCH v2 2/4] dt-bindings: dma: snps,dw-axi-dmac: Add #address-cells and #size-cells

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: <d2aae30e01537a737c3a47c0210e6deb79d160d6.1764927089.git.khairul.anuar.romli@altera.com>
Date: Mon,  8 Dec 2025 09:57:43 +0800
From: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
To: Dinh Nguyen <dinguyen@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Vinod Koul <vkoul@...nel.org>,
	dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Khairul Anuar Romli <khairul.anuar.romli@...era.com>
Subject: [PATCH v2 2/4] dt-bindings: dma: snps,dw-axi-dmac: Add #address-cells and #size-cells

Add '#address-cells' and '#size-cells' to resolved the dt-schema build
build issue when dma-ranges is presence. Without address-cells and
size-cells presence in DT, kernel panic is observed due to of_base driver
treats address-cells as two and size-cells as one.

Defining these cells explicitly ensures the binding correctly documents the
necessary structure for nodes that describe the DMA-accessible memory
space.

The supported enumeration for both properties is [1, 2], accommodating both
32-bit and 64-bit address/size representations.

Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@...era.com>
---
Changes in v2:
	- Add address-cells and size-cells patch into the series
---
 .../devicetree/bindings/dma/snps,dw-axi-dmac.yaml      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
index 1a1800d9b544..2b542ff9a6cd 100644
--- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
@@ -33,6 +33,16 @@ properties:
       - description: Address range of the DMAC registers
       - description: Address range of the DMAC APB registers
 
+  '#address-cells':
+    description: The number of cells used to represent physical base address
+      in the host address space.
+    enum: [1, 2]
+
+  '#size-cells':
+    description: The number of cells used to represent the size of an address
+      range in the host address space.
+    enum: [1, 2]
+
   reg-names:
     items:
       - const: axidma_ctrl_regs
-- 
2.43.7