108 строки
2.5 KiB
YAML
108 строки
2.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/spi/st,stm32-spi.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: STMicroelectronics STM32 SPI Controller bindings
|
|
|
|
description: |
|
|
The STM32 SPI controller is used to communicate with external devices using
|
|
the Serial Peripheral Interface. It supports full-duplex, half-duplex and
|
|
simplex synchronous serial communication with external devices. It supports
|
|
from 4 to 32-bit data size.
|
|
|
|
maintainers:
|
|
- Erwan Leray <erwan.leray@st.com>
|
|
- Fabrice Gasnier <fabrice.gasnier@st.com>
|
|
|
|
allOf:
|
|
- $ref: "spi-controller.yaml#"
|
|
- if:
|
|
properties:
|
|
compatible:
|
|
contains:
|
|
const: st,stm32f4-spi
|
|
|
|
then:
|
|
properties:
|
|
st,spi-midi-ns: false
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- st,stm32f4-spi
|
|
- st,stm32h7-spi
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
clocks:
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
resets:
|
|
maxItems: 1
|
|
|
|
dmas:
|
|
description: |
|
|
DMA specifiers for tx and rx dma. DMA fifo mode must be used. See
|
|
the STM32 DMA bindings Documentation/devicetree/bindings/dma/st,stm32-dma.yaml.
|
|
items:
|
|
- description: rx DMA channel
|
|
- description: tx DMA channel
|
|
|
|
dma-names:
|
|
items:
|
|
- const: rx
|
|
- const: tx
|
|
|
|
patternProperties:
|
|
"^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$":
|
|
type: object
|
|
# SPI slave nodes must be children of the SPI master node and can
|
|
# contain the following properties.
|
|
properties:
|
|
st,spi-midi-ns:
|
|
description: |
|
|
Only for STM32H7, (Master Inter-Data Idleness) minimum time
|
|
delay in nanoseconds inserted between two consecutive data frames.
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- clocks
|
|
- interrupts
|
|
|
|
unevaluatedProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/interrupt-controller/arm-gic.h>
|
|
#include <dt-bindings/clock/stm32mp1-clks.h>
|
|
#include <dt-bindings/reset/stm32mp1-resets.h>
|
|
spi@4000b000 {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
compatible = "st,stm32h7-spi";
|
|
reg = <0x4000b000 0x400>;
|
|
interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&rcc SPI2_K>;
|
|
resets = <&rcc SPI2_R>;
|
|
dmas = <&dmamux1 0 39 0x400 0x05>,
|
|
<&dmamux1 1 40 0x400 0x05>;
|
|
dma-names = "rx", "tx";
|
|
cs-gpios = <&gpioa 11 0>;
|
|
|
|
aardvark@0 {
|
|
compatible = "totalphase,aardvark";
|
|
reg = <0>;
|
|
spi-max-frequency = <4000000>;
|
|
st,spi-midi-ns = <4000>;
|
|
};
|
|
};
|
|
|
|
...
|