Documentation/devicetree/bindings/spi/spi-cadence.yaml


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/spi-cadence.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Cadence SPI controller Device Tree Bindings

maintainers:
  - Michal Simek <michal.simek@xilinx.com>

allOf:
  - $ref: "spi-controller.yaml#"

properties:
  compatible:
    enum:
      - cdns,spi-r1p6
      - xlnx,zynq-spi-r1p6

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clock-names:
    items:
      - const: ref_clk
      - const: pclk

  clocks:
    maxItems: 2

  num-cs:
    description: |
      Number of chip selects used. If a decoder is used,
      this will be the number of chip selects after the
      decoder.
    $ref: /schemas/types.yaml#/definitions/uint32
    minimum: 1
    maximum: 4
    default: 4

  is-decoded-cs:
    description: |
      Flag to indicate whether decoder is used or not.
    $ref: /schemas/types.yaml#/definitions/uint32
    enum: [ 0, 1 ]
    default: 0

required:
  - compatible
  - reg
  - interrupts
  - clock-names
  - clocks

unevaluatedProperties: false

examples:
  - |
    spi@e0007000 {
      compatible = "xlnx,zynq-spi-r1p6";
      clock-names = "ref_clk", "pclk";
      clocks = <&clkc 26>, <&clkc 35>;
      interrupt-parent = <&intc>;
      interrupts = <0 49 4>;
      num-cs = <4>;
      is-decoded-cs = <0>;
      reg = <0xe0007000 0x1000>;
    };
...