arm-pl08x.yaml

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    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     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/dma/arm-pl08x.yaml

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sys/contrib/device-tree/Bindings/dma/arm-pl08x.yaml