| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/dma/arm-pl08x.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: ARM PrimeCells PL080 and PL081 and derivatives DMA controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Vinod Koul <vkoul@kernel.org> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: /schemas/arm/primecell.yaml# |
| 14 | - $ref: dma-controller.yaml# |
| 15 | |
| 16 | # We need a select here so we don't match all nodes with 'arm,primecell' |
| 17 | select: |
| 18 | properties: |
| 19 | compatible: |
| 20 | contains: |
| 21 | enum: |
| 22 | - arm,pl080 |
| 23 | - arm,pl081 |
| 24 | required: |
| 25 | - compatible |
| 26 | |
| 27 | properties: |
| 28 | compatible: |
| 29 | oneOf: |
| 30 | - items: |
| 31 | - enum: |
| 32 | - arm,pl080 |
| 33 | - arm,pl081 |
| 34 | - const: arm,primecell |
| 35 | - items: |
| 36 | - const: faraday,ftdma020 |
| 37 | - const: arm,pl080 |
| 38 | - const: arm,primecell |
| 39 | |
| 40 | reg: |
| 41 | maxItems: 1 |
| 42 | description: Address range of the PL08x registers |
| 43 | |
| 44 | interrupts: |
| 45 | minItems: 1 |
| 46 | description: The PL08x interrupt number |
| 47 | |
| 48 | clocks: |
| 49 | minItems: 1 |
| 50 | description: The clock running the IP core clock |
| 51 | |
| 52 | clock-names: |
| 53 | maxItems: 1 |
| 54 | |
| 55 | lli-bus-interface-ahb1: |
| 56 | type: boolean |
| 57 | description: if AHB master 1 is eligible for fetching LLIs |
| 58 | |
| 59 | lli-bus-interface-ahb2: |
| 60 | type: boolean |
| 61 | description: if AHB master 2 is eligible for fetching LLIs |
| 62 | |
| 63 | mem-bus-interface-ahb1: |
| 64 | type: boolean |
| 65 | description: if AHB master 1 is eligible for fetching memory contents |
| 66 | |
| 67 | mem-bus-interface-ahb2: |
| 68 | type: boolean |
| 69 | description: if AHB master 2 is eligible for fetching memory contents |
| 70 | |
| 71 | memcpy-burst-size: |
| 72 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 73 | enum: |
| 74 | - 1 |
| 75 | - 4 |
| 76 | - 8 |
| 77 | - 16 |
| 78 | - 32 |
| 79 | - 64 |
| 80 | - 128 |
| 81 | - 256 |
| 82 | description: the size of the bursts for memcpy |
| 83 | |
| 84 | memcpy-bus-width: |
| 85 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 86 | enum: |
| 87 | - 8 |
| 88 | - 16 |
| 89 | - 32 |
| 90 | - 64 |
| 91 | description: bus width used for memcpy in bits. FTDMAC020 also accept 64 bits |
| 92 | |
| 93 | resets: |
| 94 | maxItems: 1 |
| 95 | |
| 96 | required: |
| 97 | - reg |
| 98 | - interrupts |
| 99 | - clocks |
| 100 | - clock-names |
| 101 | - "#dma-cells" |
| 102 | |
| 103 | unevaluatedProperties: false |
| 104 | |
| 105 | examples: |
| 106 | - | |
| 107 | dmac0: dma-controller@10130000 { |
| 108 | compatible = "arm,pl080", "arm,primecell"; |
| 109 | reg = <0x10130000 0x1000>; |
| 110 | interrupt-parent = <&vica>; |
| 111 | interrupts = <15>; |
| 112 | clocks = <&hclkdma0>; |
| 113 | clock-names = "apb_pclk"; |
| 114 | lli-bus-interface-ahb1; |
| 115 | lli-bus-interface-ahb2; |
| 116 | mem-bus-interface-ahb2; |
| 117 | memcpy-burst-size = <256>; |
| 118 | memcpy-bus-width = <32>; |
| 119 | #dma-cells = <2>; |
| 120 | }; |
| 121 | - | |
| 122 | #include <dt-bindings/interrupt-controller/irq.h> |
| 123 | #include <dt-bindings/reset/cortina,gemini-reset.h> |
| 124 | #include <dt-bindings/clock/cortina,gemini-clock.h> |
| 125 | dma-controller@67000000 { |
| 126 | compatible = "faraday,ftdma020", "arm,pl080", "arm,primecell"; |
| 127 | /* Faraday Technology FTDMAC020 variant */ |
| 128 | arm,primecell-periphid = <0x0003b080>; |
| 129 | reg = <0x67000000 0x1000>; |
| 130 | interrupts = <9 IRQ_TYPE_EDGE_RISING>; |
| 131 | resets = <&syscon GEMINI_RESET_DMAC>; |
| 132 | clocks = <&syscon GEMINI_CLK_AHB>; |
| 133 | clock-names = "apb_pclk"; |
| 134 | /* Bus interface AHB1 (AHB0) is totally tilted */ |
| 135 | lli-bus-interface-ahb2; |
| 136 | mem-bus-interface-ahb2; |
| 137 | memcpy-burst-size = <256>; |
| 138 | memcpy-bus-width = <32>; |
| 139 | #dma-cells = <2>; |
| 140 | }; |