| # 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 <alexandre.belloni@bootlin.com> |
| |
| 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 <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/dma/at91.h> |
| #include <dt-bindings/gpio/gpio.h> |
| |
| 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>; |
| }; |
| }; |
