linux-kernel - [PATCH 1/3] dt-bindings: dma: snps,dw-axi-dmac: Add CV1800B compatible

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Message-ID: <20251212020504.915616-2-inochiama@gmail.com>
Date: Fri, 12 Dec 2025 10:05:01 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
	Vinod Koul <vkoul@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Paul Walmsley <pjw@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Alexander Sverdlin <alexander.sverdlin@...il.com>,
	Longbin Li <looong.bin@...il.com>,
	Yixun Lan <dlan@...too.org>,
	Ze Huang <huangze@...t.edu.cn>
Cc: "Anton D . Stavinskii" <stavinsky@...il.com>,
	dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	sophgo@...ts.linux.dev
Subject: [PATCH 1/3] dt-bindings: dma: snps,dw-axi-dmac: Add CV1800B compatible

The DMA controller on CV1800B needs to use the DMA phandle args
as the channel number instead of hardware handshake number, so
add a new compatible for the DMA controller on CV1800B.

Change the DMA phandle args parsing logic so it can use handshake
number as channel number if necessary

Signed-off-by: Inochi Amaoto <inochiama@...il.com>
---
 Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
index a393a33c8908..0b5c8314e25e 100644
--- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
@@ -20,6 +20,7 @@ properties:
     enum:
       - snps,axi-dma-1.01a
       - intel,kmb-axi-dma
+      - sophgo,cv1800b-axi-dma
       - starfive,jh7110-axi-dma
       - starfive,jh8100-axi-dma

--
2.52.0