1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/spi/st,stm32-spi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: STMicroelectronics STM32 SPI Controller
8
9 description: |
10 The STM32 SPI controller is used to communicate with external devices using
11 the Serial Peripheral Interface. It supports full-duplex, half-duplex and
12 simplex synchronous serial communication with external devices. It supports
13 from 4 to 32-bit data size.
14
15 maintainers:
16 - Erwan Leray <erwan.leray@foss.st.com>
17 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
18
19 allOf:
20 - $ref: spi-controller.yaml#
21
22 properties:
23 compatible:
24 enum:
25 - st,stm32f4-spi
26 - st,stm32f7-spi
27 - st,stm32h7-spi
28 - st,stm32mp25-spi
29
30 reg:
31 maxItems: 1
32
33 clocks:
34 maxItems: 1
35
36 interrupts:
37 maxItems: 1
38
39 resets:
40 maxItems: 1
41
42 dmas:
43 description: |
44 DMA specifiers for tx and rx dma. DMA fifo mode must be used. See
45 the STM32 DMA controllers bindings Documentation/devicetree/bindings/dma/stm32/*.yaml.
46 items:
47 - description: rx DMA channel
48 - description: tx DMA channel
49
50 dma-names:
51 items:
52 - const: rx
53 - const: tx
54
55 access-controllers:
56 minItems: 1
57 maxItems: 2
58
59 required:
60 - compatible
61 - reg
62 - clocks
63 - interrupts
64
65 unevaluatedProperties: false
66
67 examples:
68 - |
69 #include <dt-bindings/interrupt-controller/arm-gic.h>
70 #include <dt-bindings/clock/stm32mp1-clks.h>
71 #include <dt-bindings/reset/stm32mp1-resets.h>
72 spi@4000b000 {
73 #address-cells = <1>;
74 #size-cells = <0>;
75 compatible = "st,stm32h7-spi";
76 reg = <0x4000b000 0x400>;
77 interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
78 clocks = <&rcc SPI2_K>;
79 resets = <&rcc SPI2_R>;
80 dmas = <&dmamux1 0 39 0x400 0x05>,
81 <&dmamux1 1 40 0x400 0x05>;
82 dma-names = "rx", "tx";
83 cs-gpios = <&gpioa 11 0>;
84 };
85
86 ...
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