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1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause2%YAML 1.23---4$id: http://devicetree.org/schemas/dma/sprd,sc9860-dma.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Spreadtrum SC9860 DMA controller8 9description: |10 There are three DMA controllers: AP DMA, AON DMA and AGCP DMA. For AGCP11 DMA controller, it can or do not request the IRQ, which will save12 system power without resuming system by DMA interrupts if AGCP DMA13 does not request the IRQ.14 15maintainers:16 - Orson Zhai <orsonzhai@gmail.com>17 - Baolin Wang <baolin.wang7@gmail.com>18 - Chunyan Zhang <zhang.lyra@gmail.com>19 20properties:21 compatible:22 const: sprd,sc9860-dma23 24 reg:25 maxItems: 126 27 interrupts:28 maxItems: 129 30 clocks:31 minItems: 132 items:33 - description: DMA enable clock34 - description: optional ashb_eb clock, only for the AGCP DMA controller35 36 clock-names:37 minItems: 138 items:39 - const: enable40 - const: ashb_eb41 42 '#dma-cells':43 const: 144 45 dma-channels:46 const: 3247 48 '#dma-channels':49 const: 3250 deprecated: true51 52required:53 - compatible54 - reg55 - clocks56 - clock-names57 - '#dma-cells'58 - dma-channels59 60allOf:61 - $ref: dma-controller.yaml#62 63unevaluatedProperties: false64 65examples:66 - |67 #include <dt-bindings/clock/sprd,sc9860-clk.h>68 #include <dt-bindings/interrupt-controller/arm-gic.h>69 #include <dt-bindings/interrupt-controller/irq.h>70 71 /* AP DMA controller */72 dma-controller@20100000 {73 compatible = "sprd,sc9860-dma";74 reg = <0x20100000 0x4000>;75 interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;76 clocks = <&apahb_gate CLK_DMA_EB>;77 clock-names = "enable";78 #dma-cells = <1>;79 dma-channels = <32>;80 };81 82 /* AGCP DMA controller */83 dma-controller@41580000 {84 compatible = "sprd,sc9860-dma";85 reg = <0x41580000 0x4000>;86 clocks = <&agcp_gate CLK_AGCP_DMAAP_EB>,87 <&agcp_gate CLK_AGCP_AP_ASHB_EB>;88 clock-names = "enable", "ashb_eb";89 #dma-cells = <1>;90 dma-channels = <32>;91 };92...93