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 7title: STMicroelectronics STM32 SPI Controller 8 9description: | 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 15maintainers: 16 - Erwan Leray <erwan.leray@foss.st.com> 17 - Fabrice Gasnier <fabrice.gasnier@foss.st.com> 18 19allOf: 20 - $ref: spi-controller.yaml# 21 22properties: 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 bindings Documentation/devicetree/bindings/dma/st,stm32-dma.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 55required: 56 - compatible 57 - reg 58 - clocks 59 - interrupts 60 61unevaluatedProperties: false 62 63examples: 64 - | 65 #include <dt-bindings/interrupt-controller/arm-gic.h> 66 #include <dt-bindings/clock/stm32mp1-clks.h> 67 #include <dt-bindings/reset/stm32mp1-resets.h> 68 spi@4000b000 { 69 #address-cells = <1>; 70 #size-cells = <0>; 71 compatible = "st,stm32h7-spi"; 72 reg = <0x4000b000 0x400>; 73 interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>; 74 clocks = <&rcc SPI2_K>; 75 resets = <&rcc SPI2_R>; 76 dmas = <&dmamux1 0 39 0x400 0x05>, 77 <&dmamux1 1 40 0x400 0x05>; 78 dma-names = "rx", "tx"; 79 cs-gpios = <&gpioa 11 0>; 80 }; 81 82... 83