st,stm32-spi.yaml (2429B)
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 bindings 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 - $ref: "spi-controller.yaml#" 21 - if: 22 properties: 23 compatible: 24 contains: 25 const: st,stm32f4-spi 26 27 then: 28 properties: 29 st,spi-midi-ns: false 30 31properties: 32 compatible: 33 enum: 34 - st,stm32f4-spi 35 - st,stm32h7-spi 36 37 reg: 38 maxItems: 1 39 40 clocks: 41 maxItems: 1 42 43 interrupts: 44 maxItems: 1 45 46 resets: 47 maxItems: 1 48 49 dmas: 50 description: | 51 DMA specifiers for tx and rx dma. DMA fifo mode must be used. See 52 the STM32 DMA bindings Documentation/devicetree/bindings/dma/st,stm32-dma.yaml. 53 items: 54 - description: rx DMA channel 55 - description: tx DMA channel 56 57 dma-names: 58 items: 59 - const: rx 60 - const: tx 61 62patternProperties: 63 "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$": 64 type: object 65 # SPI slave nodes must be children of the SPI master node and can 66 # contain the following properties. 67 properties: 68 st,spi-midi-ns: 69 description: | 70 Only for STM32H7, (Master Inter-Data Idleness) minimum time 71 delay in nanoseconds inserted between two consecutive data frames. 72 73required: 74 - compatible 75 - reg 76 - clocks 77 - interrupts 78 79unevaluatedProperties: false 80 81examples: 82 - | 83 #include <dt-bindings/interrupt-controller/arm-gic.h> 84 #include <dt-bindings/clock/stm32mp1-clks.h> 85 #include <dt-bindings/reset/stm32mp1-resets.h> 86 spi@4000b000 { 87 #address-cells = <1>; 88 #size-cells = <0>; 89 compatible = "st,stm32h7-spi"; 90 reg = <0x4000b000 0x400>; 91 interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>; 92 clocks = <&rcc SPI2_K>; 93 resets = <&rcc SPI2_R>; 94 dmas = <&dmamux1 0 39 0x400 0x05>, 95 <&dmamux1 1 40 0x400 0x05>; 96 dma-names = "rx", "tx"; 97 cs-gpios = <&gpioa 11 0>; 98 99 }; 100 101...