xref: /freebsd/sys/contrib/device-tree/Bindings/spi/atmel,at91rm9200-spi.yaml (revision 96190b4fef3b4a0cc3ca0606b0c4e3e69a5e6717) 
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      - items:
24          - const: microchip,sam9x7-spi
25          - const: microchip,sam9x60-spi
26          - const: atmel,at91rm9200-spi
27
28  reg:
29    maxItems: 1
30
31  interrupts:
32    maxItems: 1
33
34  clock-names:
35    contains:
36      const: spi_clk
37
38  clocks:
39    maxItems: 1
40
41  dmas:
42    items:
43      - description: TX DMA Channel
44      - description: RX DMA Channel
45
46  dma-names:
47    items:
48      - const: tx
49      - const: rx
50
51  atmel,fifo-size:
52    $ref: /schemas/types.yaml#/definitions/uint32
53    description: |
54      Maximum number of data the RX and TX FIFOs can store for FIFO
55      capable SPI controllers.
56    enum: [ 16, 32 ]
57
58required:
59  - compatible
60  - reg
61  - interrupts
62  - clock-names
63  - clocks
64
65unevaluatedProperties: false
66
67examples:
68  - |
69    #include <dt-bindings/gpio/gpio.h>
70    #include <dt-bindings/interrupt-controller/irq.h>
71
72    spi1: spi@fffcc000 {
73        compatible = "atmel,at91rm9200-spi";
74        reg = <0xfffcc000 0x4000>;
75        interrupts = <13 IRQ_TYPE_LEVEL_HIGH 5>;
76        #address-cells = <1>;
77        #size-cells = <0>;
78        clocks = <&spi1_clk>;
79        clock-names = "spi_clk";
80        cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;
81        atmel,fifo-size = <32>;
82
83        mmc@0 {
84            compatible = "mmc-spi-slot";
85            reg = <0>;
86            gpios = <&pioC 4 GPIO_ACTIVE_HIGH>;    /* CD */
87            spi-max-frequency = <25000000>;
88        };
89    };
90