xref: /freebsd/sys/contrib/device-tree/Bindings/spi/atmel,at91rm9200-spi.yaml (revision fac71e4e09885bb2afa3d984a0c239a52e1a7418) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/spi/atmel,at91rm9200-spi.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Atmel SPI device
9
10maintainers:
11  - Tudor Ambarus <tudor.ambarus@linaro.org>
12
13allOf:
14  - $ref: spi-controller.yaml#
15
16properties:
17  compatible:
18    oneOf:
19      - const: atmel,at91rm9200-spi
20      - items:
21          - const: microchip,sam9x60-spi
22          - const: atmel,at91rm9200-spi
23
24  reg:
25    maxItems: 1
26
27  interrupts:
28    maxItems: 1
29
30  clock-names:
31    contains:
32      const: spi_clk
33
34  clocks:
35    maxItems: 1
36
37  dmas:
38    items:
39      - description: TX DMA Channel
40      - description: RX DMA Channel
41
42  dma-names:
43    items:
44      - const: tx
45      - const: rx
46
47  atmel,fifo-size:
48    $ref: /schemas/types.yaml#/definitions/uint32
49    description: |
50      Maximum number of data the RX and TX FIFOs can store for FIFO
51      capable SPI controllers.
52    enum: [ 16, 32 ]
53
54required:
55  - compatible
56  - reg
57  - interrupts
58  - clock-names
59  - clocks
60
61unevaluatedProperties: false
62
63examples:
64  - |
65    #include <dt-bindings/gpio/gpio.h>
66    #include <dt-bindings/interrupt-controller/irq.h>
67
68    spi1: spi@fffcc000 {
69        compatible = "atmel,at91rm9200-spi";
70        reg = <0xfffcc000 0x4000>;
71        interrupts = <13 IRQ_TYPE_LEVEL_HIGH 5>;
72        #address-cells = <1>;
73        #size-cells = <0>;
74        clocks = <&spi1_clk>;
75        clock-names = "spi_clk";
76        cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;
77        atmel,fifo-size = <32>;
78
79        mmc@0 {
80            compatible = "mmc-spi-slot";
81            reg = <0>;
82            gpios = <&pioC 4 GPIO_ACTIVE_HIGH>;    /* CD */
83            spi-max-frequency = <25000000>;
84        };
85    };
86