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Thu, 14 Aug 2025 22:17:41 -0700 (PDT) From: Guodong Xu Date: Fri, 15 Aug 2025 13:16:23 +0800 Subject: [PATCH v4 1/8] dt-bindings: dma: Add SpacemiT K1 PDMA controller Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250815-working_dma_0701_v2-v4-1-62145ab6ea30@riscstar.com> References: <20250815-working_dma_0701_v2-v4-0-62145ab6ea30@riscstar.com> In-Reply-To: <20250815-working_dma_0701_v2-v4-0-62145ab6ea30@riscstar.com> To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , duje@dujemihanovic.xyz Cc: Alex Elder , Vivian Wang , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, Guodong Xu , Troy Mitchell X-Mailer: b4 0.14.2 Add device tree binding documentation for the SpacemiT K1 PDMA controller. Signed-off-by: Guodong Xu Reviewed-by: Rob Herring (Arm) --- v4: Add Rob's reviewed-by. v3: New patch. --- .../devicetree/bindings/dma/spacemit,k1-pdma.yaml | 68 ++++++++++++++++++= ++++ 1 file changed, 68 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/spacemit,k1-pdma.yaml b/= Documentation/devicetree/bindings/dma/spacemit,k1-pdma.yaml new file mode 100644 index 0000000000000000000000000000000000000000..ec06235baf5ca3ecffe7dba9bb4= 25b242985660e --- /dev/null +++ b/Documentation/devicetree/bindings/dma/spacemit,k1-pdma.yaml @@ -0,0 +1,68 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/spacemit,k1-pdma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SpacemiT K1 PDMA Controller + +maintainers: + - Guodong Xu + +allOf: + - $ref: dma-controller.yaml# + +properties: + compatible: + const: spacemit,k1-pdma + + reg: + maxItems: 1 + + interrupts: + description: Shared interrupt for all DMA channels + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + dma-channels: + maximum: 16 + + '#dma-cells': + const: 1 + description: + The DMA request number for the peripheral device. + +required: + - compatible + - reg + - interrupts + - clocks + - resets + - dma-channels + - '#dma-cells' + +unevaluatedProperties: false + +examples: + - | + #include + + soc { + #address-cells =3D <2>; + #size-cells =3D <2>; + + dma-controller@d4000000 { + compatible =3D "spacemit,k1-pdma"; + reg =3D <0x0 0xd4000000 0x0 0x4000>; + interrupts =3D <72>; + clocks =3D <&syscon_apmu CLK_DMA>; + resets =3D <&syscon_apmu RESET_DMA>; + dma-channels =3D <16>; + #dma-cells =3D <1>; + }; + }; --=20 2.43.0