xref: /freebsd/sys/contrib/device-tree/Bindings/spi/fsl-imx-cspi.yaml (revision e32fecd0c2c3ee37c47ee100f169e7eb0282a873) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/fsl-imx-cspi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale (Enhanced) Configurable Serial Peripheral Interface (CSPI/eCSPI) for i.MX
8
9maintainers:
10  - Shawn Guo <shawnguo@kernel.org>
11
12allOf:
13  - $ref: "/schemas/spi/spi-controller.yaml#"
14
15properties:
16  compatible:
17    oneOf:
18      - const: fsl,imx1-cspi
19      - const: fsl,imx21-cspi
20      - const: fsl,imx27-cspi
21      - const: fsl,imx31-cspi
22      - const: fsl,imx35-cspi
23      - const: fsl,imx51-ecspi
24      - const: fsl,imx53-ecspi
25      - items:
26          - enum:
27              - fsl,imx50-ecspi
28              - fsl,imx6q-ecspi
29              - fsl,imx6sx-ecspi
30              - fsl,imx6sl-ecspi
31              - fsl,imx6sll-ecspi
32              - fsl,imx6ul-ecspi
33              - fsl,imx7d-ecspi
34              - fsl,imx8mq-ecspi
35              - fsl,imx8mm-ecspi
36              - fsl,imx8mn-ecspi
37              - fsl,imx8mp-ecspi
38          - const: fsl,imx51-ecspi
39
40  reg:
41    maxItems: 1
42
43  interrupts:
44    maxItems: 1
45
46  clocks:
47    items:
48      - description: SoC SPI ipg clock
49      - description: SoC SPI per clock
50
51  clock-names:
52    items:
53      - const: ipg
54      - const: per
55
56  dmas:
57    items:
58      - description: DMA controller phandle and request line for RX
59      - description: DMA controller phandle and request line for TX
60
61  dma-names:
62    items:
63      - const: rx
64      - const: tx
65
66  fsl,spi-rdy-drctl:
67    $ref: /schemas/types.yaml#/definitions/uint32
68    description: |
69      Integer, representing the value of DRCTL, the register controlling
70      the SPI_READY handling. Note that to enable the DRCTL consideration,
71      the SPI_READY mode-flag needs to be set too.
72      Valid values are: 0 (disabled), 1 (edge-triggered burst) and 2 (level-triggered burst).
73    enum: [0, 1, 2]
74
75required:
76  - compatible
77  - reg
78  - interrupts
79  - clocks
80  - clock-names
81
82unevaluatedProperties: false
83
84examples:
85  - |
86    #include <dt-bindings/clock/imx5-clock.h>
87
88    spi@70010000 {
89        #address-cells = <1>;
90        #size-cells = <0>;
91        compatible = "fsl,imx51-ecspi";
92        reg = <0x70010000 0x4000>;
93        interrupts = <36>;
94        clocks = <&clks IMX5_CLK_ECSPI1_IPG_GATE>,
95                 <&clks IMX5_CLK_ECSPI1_PER_GATE>;
96        clock-names = "ipg", "per";
97    };
98