| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/serial/st,stm32-uart.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| maintainers: |
| - Erwan Le Ray <erwan.leray@st.com> |
| |
| title: STMicroelectronics STM32 USART bindings |
| |
| allOf: |
| - $ref: rs485.yaml |
| |
| properties: |
| compatible: |
| enum: |
| - st,stm32-uart |
| - st,stm32f7-uart |
| - st,stm32h7-uart |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| clocks: |
| maxItems: 1 |
| |
| resets: |
| maxItems: 1 |
| |
| label: |
| description: label associated with this uart |
| |
| st,hw-flow-ctrl: |
| description: enable hardware flow control |
| $ref: /schemas/types.yaml#/definitions/flag |
| |
| dmas: |
| minItems: 1 |
| maxItems: 2 |
| |
| dma-names: |
| items: |
| enum: [ rx, tx ] |
| minItems: 1 |
| maxItems: 2 |
| |
| cts-gpios: |
| maxItems: 1 |
| |
| rts-gpios: |
| maxItems: 1 |
| |
| wakeup-source: true |
| |
| rs485-rts-delay: true |
| rs485-rts-active-low: true |
| linux,rs485-enabled-at-boot-time: true |
| rs485-rx-during-tx: true |
| |
| if: |
| required: |
| - st,hw-flow-ctrl |
| then: |
| properties: |
| cts-gpios: false |
| rts-gpios: false |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - clocks |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/clock/stm32mp1-clks.h> |
| usart1: serial@40011000 { |
| compatible = "st,stm32-uart"; |
| reg = <0x40011000 0x400>; |
| interrupts = <37>; |
| clocks = <&rcc 0 164>; |
| dmas = <&dma2 2 4 0x414 0x0>, |
| <&dma2 7 4 0x414 0x0>; |
| dma-names = "rx", "tx"; |
| rs485-rts-active-low; |
| }; |
| |
| ... |
