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Sun, 02 Mar 2025 22:57:17 -0800 (PST) From: Inochi Amaoto To: Eugeniy Paltsev , Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Inochi Amaoto , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yixun Lan , Longbin Li Subject: [PATCH] dt-bindings: dma: snps,dw-axi-dmac: Allow devices to be marked as noncoherent Date: Mon, 3 Mar 2025 14:56:48 +0800 Message-ID: <20250303065649.937233-1-inochiama@gmail.com> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 A RISC-V platform can have both DMA coherent/noncoherent devices. Since the RISC-V architecture is marked coherent, devices should be marked as noncoherent when coherent devices exist. Add dma-noncoherent property for snps,dw-axi-dmac device. It will be used on SG2044, and it has other coherent devices. Signed-off-by: Inochi Amaoto Acked-by: Conor Dooley --- Related discussion for this property. https://lore.kernel.org/all/20250221013758.370936-1-inochiama@gmail.com/ --- Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml | 2 ++ 1 file changed, 2 insertions(+) -- 2.48.1 diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml index 525f5f3932f5..935735a59afd 100644 --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml @@ -59,6 +59,8 @@ properties: minimum: 1 maximum: 8 + dma-noncoherent: true + resets: minItems: 1 maxItems: 2