spi-sifive.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/spi/spi-sifive.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: SiFive SPI controller
    8 
    9 maintainers:
   10   - Pragnesh Patel <pragnesh.patel@sifive.com>
   11   - Paul Walmsley  <paul.walmsley@sifive.com>
   12   - Palmer Dabbelt <palmer@sifive.com>
   13 
   14 allOf:
   15   - $ref: "spi-controller.yaml#"
   16 
   17 properties:
   18   compatible:
   19     items:
   20       - enum:
   21           - sifive,fu540-c000-spi
   22           - sifive,fu740-c000-spi
   23       - const: sifive,spi0
   24 
   25     description:
   26       Should be "sifive,<chip>-spi" and "sifive,spi<version>".
   27       Supported compatible strings are -
   28       "sifive,fu540-c000-spi" and "sifive,fu740-c000-spi" for the SiFive SPI v0
   29       as integrated onto the SiFive FU540 and FU740 chip resp, and "sifive,spi0"
   30       for the SiFive SPI v0 IP block with no chip integration tweaks.
   31       Please refer to sifive-blocks-ip-versioning.txt for details
   32 
   33       SPI RTL that corresponds to the IP block version numbers can be found here -
   34       https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/spi
   35 
   36   reg:
   37     minItems: 1
   38     items:
   39       - description: SPI registers region
   40       - description: Memory mapped flash region
   41 
   42   interrupts:
   43     maxItems: 1
   44 
   45   clocks:
   46     maxItems: 1
   47 
   48     description:
   49       Must reference the frequency given to the controller
   50 
   51   sifive,fifo-depth:
   52     description:
   53       Depth of hardware queues; defaults to 8
   54     $ref: "/schemas/types.yaml#/definitions/uint32"
   55     enum: [8]
   56     default: 8
   57 
   58   sifive,max-bits-per-word:
   59     description:
   60       Maximum bits per word; defaults to 8
   61     $ref: "/schemas/types.yaml#/definitions/uint32"
   62     enum: [0, 1, 2, 3, 4, 5, 6, 7, 8]
   63     default: 8
   64 
   65 required:
   66   - compatible
   67   - reg
   68   - interrupts
   69   - clocks
   70 
   71 unevaluatedProperties: false
   72 
   73 examples:
   74   - |
   75     spi: spi@10040000 {
   76       compatible = "sifive,fu540-c000-spi", "sifive,spi0";
   77       reg = <0x10040000 0x1000>, <0x20000000 0x10000000>;
   78       interrupt-parent = <&plic>;
   79       interrupts = <51>;
   80       clocks = <&tlclk>;
   81       #address-cells = <1>;
   82       #size-cells = <0>;
   83       sifive,fifo-depth = <8>;
   84       sifive,max-bits-per-word = <8>;
   85     };
   86 
   87 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/spi/spi-sifive.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/spi/spi-sifive.yaml