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([38.114.108.131]) by smtp.gmail.com with ESMTPSA id r20-20020aa78b94000000b006933f85bc29sm2183219pfd.111.2023.09.28.05.20.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Sep 2023 05:20:15 -0700 (PDT) From: Keguang Zhang To: dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Keguang Zhang Subject: [PATCH v5 1/2] dt-bindings: dma: Add Loongson-1 DMA Date: Thu, 28 Sep 2023 20:19:52 +0800 Message-Id: <20230928121953.524608-2-keguang.zhang@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230928121953.524608-1-keguang.zhang@gmail.com> References: <20230928121953.524608-1-keguang.zhang@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Add devicetree binding document for Loongson-1 DMA. Signed-off-by: Keguang Zhang --- V4 -> V5: A newly added patch .../bindings/dma/loongson,ls1x-dma.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/loongson,ls1x-dma.yaml diff --git a/Documentation/devicetree/bindings/dma/loongson,ls1x-dma.yaml b/Documentation/devicetree/bindings/dma/loongson,ls1x-dma.yaml new file mode 100644 index 000000000000..51b45d998a58 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/loongson,ls1x-dma.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/loongson,ls1x-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson-1 DMA Controller + +maintainers: + - Keguang Zhang + +description: | + Loongson-1 DMA controller provides 3 independent channels for + peripherals such as NAND and AC97. + +properties: + compatible: + enum: + - loongson,ls1b-dma + - loongson,ls1c-dma + + reg: + maxItems: 1 + + interrupts: + description: Each channel has a dedicated interrupt line. + minItems: 1 + maxItems: 3 + + interrupt-names: + minItems: 1 + items: + - pattern: ch0 + - pattern: ch1 + - pattern: ch2 + + '#dma-cells': + description: The single cell represents the channel index. + const: 1 + +required: + - compatible + - reg + - interrupts + - interrupt-names + - '#dma-cells' + +additionalProperties: false + +examples: + - | + #include + dma: dma-controller@1fd01160 { + compatible = "loongson,ls1b-dma"; + reg = <0x1fd01160 0x18>; + + interrupt-parent = <&intc0>; + interrupts = <13 IRQ_TYPE_EDGE_RISING>, + <14 IRQ_TYPE_EDGE_RISING>, + <15 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "ch0", "ch1", "ch2"; + + #dma-cells = <1>; + };