xref: /linux/Documentation/devicetree/bindings/spi/nvidia,tegra210-quad.yaml (revision d9a0788093565c300f7c8dd034dbfa6ac4da9aa6) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/nvidia,tegra210-quad.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Tegra Quad SPI Controller
8
9maintainers:
10  - Thierry Reding <thierry.reding@gmail.com>
11  - Jonathan Hunter <jonathanh@nvidia.com>
12
13properties:
14  compatible:
15    enum:
16      - nvidia,tegra210-qspi
17      - nvidia,tegra186-qspi
18      - nvidia,tegra194-qspi
19      - nvidia,tegra234-qspi
20      - nvidia,tegra241-qspi
21
22  reg:
23    maxItems: 1
24
25  interrupts:
26    maxItems: 1
27
28  clock-names:
29    items:
30      - const: qspi
31      - const: qspi_out
32
33  clocks:
34    maxItems: 2
35
36  resets:
37    maxItems: 1
38
39  dmas:
40    maxItems: 2
41
42  dma-names:
43    items:
44      - const: rx
45      - const: tx
46
47  iommus:
48    maxItems: 1
49
50patternProperties:
51  "@[0-9a-f]+$":
52    type: object
53    additionalProperties: true
54
55    properties:
56      spi-rx-bus-width:
57        enum: [1, 2, 4]
58
59      spi-tx-bus-width:
60        enum: [1, 2, 4]
61
62required:
63  - compatible
64  - reg
65  - interrupts
66  - clock-names
67  - clocks
68  - resets
69
70unevaluatedProperties: false
71
72allOf:
73  - $ref: spi-controller.yaml#
74  - if:
75      properties:
76        compatible:
77          not:
78            contains:
79              const: nvidia,tegra234-qspi
80    then:
81      properties:
82        iommus: false
83
84examples:
85  - |
86    #include <dt-bindings/clock/tegra210-car.h>
87    #include <dt-bindings/reset/tegra210-car.h>
88    #include <dt-bindings/interrupt-controller/arm-gic.h>
89    spi@70410000 {
90        compatible = "nvidia,tegra210-qspi";
91        reg = <0x70410000 0x1000>;
92        interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
93        #address-cells = <1>;
94        #size-cells = <0>;
95        clocks = <&tegra_car TEGRA210_CLK_QSPI>,
96                 <&tegra_car TEGRA210_CLK_QSPI_PM>;
97        clock-names = "qspi", "qspi_out";
98        resets = <&tegra_car 211>;
99        dmas = <&apbdma 5>, <&apbdma 5>;
100        dma-names = "rx", "tx";
101
102        flash@0 {
103            compatible = "jedec,spi-nor";
104            reg = <0>;
105            spi-max-frequency = <104000000>;
106            spi-tx-bus-width = <2>;
107            spi-rx-bus-width = <2>;
108            nvidia,tx-clk-tap-delay = <0>;
109            nvidia,rx-clk-tap-delay = <0>;
110        };
111    };
112