18c2ecf20Sopenharmony_ci# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 28c2ecf20Sopenharmony_ci%YAML 1.2 38c2ecf20Sopenharmony_ci--- 48c2ecf20Sopenharmony_ci$id: http://devicetree.org/schemas/serial/st,stm32-uart.yaml# 58c2ecf20Sopenharmony_ci$schema: http://devicetree.org/meta-schemas/core.yaml# 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_cimaintainers: 88c2ecf20Sopenharmony_ci - Erwan Le Ray <erwan.leray@st.com> 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_cititle: STMicroelectronics STM32 USART bindings 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ciallOf: 138c2ecf20Sopenharmony_ci - $ref: rs485.yaml 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciproperties: 168c2ecf20Sopenharmony_ci compatible: 178c2ecf20Sopenharmony_ci enum: 188c2ecf20Sopenharmony_ci - st,stm32-uart 198c2ecf20Sopenharmony_ci - st,stm32f7-uart 208c2ecf20Sopenharmony_ci - st,stm32h7-uart 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci reg: 238c2ecf20Sopenharmony_ci maxItems: 1 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci interrupts: 268c2ecf20Sopenharmony_ci maxItems: 1 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci clocks: 298c2ecf20Sopenharmony_ci maxItems: 1 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci resets: 328c2ecf20Sopenharmony_ci maxItems: 1 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci label: 358c2ecf20Sopenharmony_ci description: label associated with this uart 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci st,hw-flow-ctrl: 388c2ecf20Sopenharmony_ci description: enable hardware flow control (deprecated) 398c2ecf20Sopenharmony_ci $ref: /schemas/types.yaml#/definitions/flag 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci uart-has-rtscts: true 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci dmas: 448c2ecf20Sopenharmony_ci minItems: 1 458c2ecf20Sopenharmony_ci maxItems: 2 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_ci dma-names: 488c2ecf20Sopenharmony_ci items: 498c2ecf20Sopenharmony_ci enum: [ rx, tx ] 508c2ecf20Sopenharmony_ci minItems: 1 518c2ecf20Sopenharmony_ci maxItems: 2 528c2ecf20Sopenharmony_ci 538c2ecf20Sopenharmony_ci cts-gpios: 548c2ecf20Sopenharmony_ci maxItems: 1 558c2ecf20Sopenharmony_ci 568c2ecf20Sopenharmony_ci rts-gpios: 578c2ecf20Sopenharmony_ci maxItems: 1 588c2ecf20Sopenharmony_ci 598c2ecf20Sopenharmony_ci wakeup-source: true 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_ci rs485-rts-delay: true 628c2ecf20Sopenharmony_ci rs485-rts-active-low: true 638c2ecf20Sopenharmony_ci linux,rs485-enabled-at-boot-time: true 648c2ecf20Sopenharmony_ci rs485-rx-during-tx: true 658c2ecf20Sopenharmony_ci 668c2ecf20Sopenharmony_ciif: 678c2ecf20Sopenharmony_ci required: 688c2ecf20Sopenharmony_ci - st,hw-flow-ctrl 698c2ecf20Sopenharmony_cithen: 708c2ecf20Sopenharmony_ci properties: 718c2ecf20Sopenharmony_ci cts-gpios: false 728c2ecf20Sopenharmony_ci rts-gpios: false 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_cirequired: 758c2ecf20Sopenharmony_ci - compatible 768c2ecf20Sopenharmony_ci - reg 778c2ecf20Sopenharmony_ci - interrupts 788c2ecf20Sopenharmony_ci - clocks 798c2ecf20Sopenharmony_ci 808c2ecf20Sopenharmony_ciadditionalProperties: 818c2ecf20Sopenharmony_ci type: object 828c2ecf20Sopenharmony_ci 838c2ecf20Sopenharmony_ciexamples: 848c2ecf20Sopenharmony_ci - | 858c2ecf20Sopenharmony_ci #include <dt-bindings/clock/stm32mp1-clks.h> 868c2ecf20Sopenharmony_ci usart1: serial@40011000 { 878c2ecf20Sopenharmony_ci compatible = "st,stm32-uart"; 888c2ecf20Sopenharmony_ci reg = <0x40011000 0x400>; 898c2ecf20Sopenharmony_ci interrupts = <37>; 908c2ecf20Sopenharmony_ci clocks = <&rcc 0 164>; 918c2ecf20Sopenharmony_ci dmas = <&dma2 2 4 0x414 0x0>, 928c2ecf20Sopenharmony_ci <&dma2 7 4 0x414 0x0>; 938c2ecf20Sopenharmony_ci dma-names = "rx", "tx"; 948c2ecf20Sopenharmony_ci rs485-rts-active-low; 958c2ecf20Sopenharmony_ci }; 968c2ecf20Sopenharmony_ci 978c2ecf20Sopenharmony_ci... 98