xref: /linux/Documentation/devicetree/bindings/spi/marvell,mmp2-ssp.yaml (revision d53b8e36925256097a08d7cb749198d85cbf9b2b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright 2019,2020 Lubomir Rintel <lkundrak@v3.sk>
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/spi/marvell,mmp2-ssp.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: PXA2xx SSP SPI Controller
9
10maintainers:
11  - Lubomir Rintel <lkundrak@v3.sk>
12
13properties:
14  compatible:
15    enum:
16      - marvell,mmp2-ssp
17      - mrvl,ce4100-ssp
18      - mvrl,pxa168-ssp
19      - mrvl,pxa25x-ssp
20      - mvrl,pxa25x-nssp
21      - mrvl,pxa27x-ssp
22      - mrvl,pxa3xx-ssp
23      - mrvl,pxa910-ssp
24
25  interrupts:
26    maxItems: 1
27
28  reg:
29    maxItems: 1
30
31  clocks:
32    maxItems: 1
33
34  dmas:
35    items:
36      - description: Receive DMA
37      - description: Transmit DMA
38
39  dma-names:
40    items:
41      - const: rx
42      - const: tx
43
44  ready-gpios:
45    description: |
46      GPIO used to signal a SPI master that the FIFO is filled and we're
47      ready to service a transfer. Only useful in slave mode.
48    maxItems: 1
49
50required:
51  - compatible
52  - reg
53  - interrupts
54  - clocks
55
56dependencies:
57  ready-gpios: [ spi-slave ]
58
59allOf:
60  - $ref: spi-controller.yaml#
61  - if:
62      properties:
63        compatible:
64          contains:
65            const: marvell,mmp2-ssp
66    then:
67      properties:
68        dmas: false
69        dma-names: false
70
71unevaluatedProperties: false
72
73examples:
74  - |
75    #include <dt-bindings/clock/marvell,mmp2.h>
76    spi@d4035000 {
77        compatible = "marvell,mmp2-ssp";
78        #address-cells = <1>;
79        #size-cells = <0>;
80        reg = <0xd4035000 0x1000>;
81        clocks = <&soc_clocks MMP2_CLK_SSP0>;
82        interrupts = <0>;
83    };
84
85...
86