xref: /linux/Documentation/devicetree/bindings/spi/fsl,espi.yaml (revision bbfd5594756011167b8f8de9a00e0c946afda1e6) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/fsl,espi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale eSPI (Enhanced Serial Peripheral Interface) controller
8
9maintainers:
10  - J. Neuschäfer <j.ne@posteo.net>
11
12properties:
13  compatible:
14    const: fsl,mpc8536-espi
15
16  reg:
17    maxItems: 1
18
19  interrupts:
20    maxItems: 1
21
22  fsl,espi-num-chipselects:
23    $ref: /schemas/types.yaml#/definitions/uint32
24    enum: [ 1, 4 ]
25    description: The number of the chipselect signals.
26
27  fsl,csbef:
28    $ref: /schemas/types.yaml#/definitions/uint32
29    minimum: 0
30    maximum: 15
31    description: Chip select assertion time in bits before frame starts
32
33  fsl,csaft:
34    $ref: /schemas/types.yaml#/definitions/uint32
35    minimum: 0
36    maximum: 15
37    description: Chip select negation time in bits after frame ends
38
39required:
40  - compatible
41  - reg
42  - interrupts
43  - fsl,espi-num-chipselects
44
45allOf:
46  - $ref: spi-controller.yaml#
47
48unevaluatedProperties: false
49
50examples:
51  - |
52    #include <dt-bindings/interrupt-controller/irq.h>
53
54    spi@110000 {
55        compatible = "fsl,mpc8536-espi";
56        reg = <0x110000 0x1000>;
57        #address-cells = <1>;
58        #size-cells = <0>;
59        interrupts = <53 IRQ_TYPE_EDGE_FALLING>;
60        fsl,espi-num-chipselects = <4>;
61        fsl,csbef = <1>;
62        fsl,csaft = <1>;
63    };
64
65...
66