# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) # Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries %YAML 1.2 --- $id: http://devicetree.org/schemas/i2c/atmel,at91sam-i2c.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: I2C for Atmel/Microchip platforms maintainers: - Alexandre Belloni properties: compatible: oneOf: - items: - enum: - atmel,at91rm9200-i2c - atmel,at91sam9261-i2c - atmel,at91sam9260-i2c - atmel,at91sam9g20-i2c - atmel,at91sam9g10-i2c - atmel,at91sam9x5-i2c - atmel,sama5d4-i2c - atmel,sama5d2-i2c - microchip,sam9x60-i2c - items: - const: microchip,sama7g5-i2c - const: microchip,sam9x60-i2c reg: maxItems: 1 interrupts: maxItems: 1 "#address-cells": const: 1 "#size-cells": const: 0 clocks: maxItems: 1 clock-frequency: default: 100000 dmas: items: - description: TX DMA Channel Specifier - description: RX DMA Channel Specifier dma-names: items: - const: tx - const: rx atmel,fifo-size: $ref: /schemas/types.yaml#/definitions/uint32 description: | Maximum number of data the RX and TX FIFOs can store for FIFO capable I2C controllers. scl-gpios: true sda-gpios: true required: - compatible - reg - interrupts - "#address-cells" - "#size-cells" - clocks allOf: - $ref: i2c-controller.yaml - if: properties: compatible: contains: enum: - atmel,sama5d4-i2c - atmel,sama5d2-i2c - microchip,sam9x60-i2c - microchip,sama7g5-i2c then: properties: i2c-sda-hold-time-ns: description: TWD hold time maxItems: 1 unevaluatedProperties: false examples: - | #include #include #include i2c0: i2c@fff84000 { compatible = "atmel,at91sam9g20-i2c"; reg = <0xfff84000 0x100>; interrupts = <12 IRQ_TYPE_LEVEL_HIGH 6>; #address-cells = <1>; #size-cells = <0>; clocks = <&twi0_clk>; clock-frequency = <400000>; eeprom@50 { compatible = "atmel,24c512"; reg = <0x50>; pagesize = <128>; }; }; i2c1: i2c@f8034600 { compatible = "atmel,sama5d2-i2c"; reg = <0xf8034600 0x100>; interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>; dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)) AT91_XDMAC_DT_PERID(11)>, <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)) AT91_XDMAC_DT_PERID(12)>; dma-names = "tx", "rx"; #address-cells = <1>; #size-cells = <0>; clocks = <&flx0>; atmel,fifo-size = <16>; i2c-sda-hold-time-ns = <336>; pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c0>; pinctrl-1 = <&pinctrl_i2c0_gpio>; sda-gpios = <&pioA 30 GPIO_ACTIVE_HIGH>; scl-gpios = <&pioA 31 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; eeprom@54 { compatible = "atmel,24c02"; reg = <0x54>; pagesize = <16>; }; };