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,stm32h7-spi 27 28 reg: 29 maxItems: 1 30 31 clocks: 32 maxItems: 1 33 34 interrupts: 35 maxItems: 1 36 37 resets: 38 maxItems: 1 39 40 dmas: 41 description: | 42 DMA specifiers for tx and rx dma. DMA fifo mode must be used. See 43 the STM32 DMA bindings Documentation/devicetree/bindings/dma/st,stm32-dma.yaml. 44 items: 45 - description: rx DMA channel 46 - description: tx DMA channel 47 48 dma-names: 49 items: 50 - const: rx 51 - const: tx 52 53required: 54 - compatible 55 - reg 56 - clocks 57 - interrupts 58 59unevaluatedProperties: false 60 61examples: 62 - | 63 #include <dt-bindings/interrupt-controller/arm-gic.h> 64 #include <dt-bindings/clock/stm32mp1-clks.h> 65 #include <dt-bindings/reset/stm32mp1-resets.h> 66 spi@4000b000 { 67 #address-cells = <1>; 68 #size-cells = <0>; 69 compatible = "st,stm32h7-spi"; 70 reg = <0x4000b000 0x400>; 71 interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>; 72 clocks = <&rcc SPI2_K>; 73 resets = <&rcc SPI2_R>; 74 dmas = <&dmamux1 0 39 0x400 0x05>, 75 <&dmamux1 1 40 0x400 0x05>; 76 dma-names = "rx", "tx"; 77 cs-gpios = <&gpioa 11 0>; 78 }; 79 80... 81