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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries3%YAML 1.24---5$id: http://devicetree.org/schemas/i2c/atmel,at91sam-i2c.yaml#6$schema: http://devicetree.org/meta-schemas/core.yaml#7 8title: I2C for Atmel/Microchip platforms9 10maintainers:11 - Alexandre Belloni <alexandre.belloni@bootlin.com>12 13properties:14 compatible:15 oneOf:16 - items:17 - enum:18 - atmel,at91rm9200-i2c19 - atmel,at91sam9261-i2c20 - atmel,at91sam9260-i2c21 - atmel,at91sam9g20-i2c22 - atmel,at91sam9g10-i2c23 - atmel,at91sam9x5-i2c24 - atmel,sama5d4-i2c25 - atmel,sama5d2-i2c26 - microchip,sam9x60-i2c27 - items:28 - enum:29 - microchip,sama7d65-i2c30 - microchip,sama7g5-i2c31 - microchip,sam9x7-i2c32 - const: microchip,sam9x60-i2c33 34 reg:35 maxItems: 136 37 interrupts:38 maxItems: 139 40 clocks:41 maxItems: 142 43 clock-frequency:44 default: 10000045 46 dmas:47 items:48 - description: TX DMA Channel Specifier49 - description: RX DMA Channel Specifier50 51 dma-names:52 items:53 - const: tx54 - const: rx55 56 atmel,fifo-size:57 $ref: /schemas/types.yaml#/definitions/uint3258 description: |59 Maximum number of data the RX and TX FIFOs can store for60 FIFO capable I2C controllers.61 62 scl-gpios: true63 64 sda-gpios: true65 66required:67 - compatible68 - reg69 - interrupts70 - clocks71 72allOf:73 - $ref: /schemas/i2c/i2c-controller.yaml#74 - if:75 properties:76 compatible:77 contains:78 enum:79 - atmel,sama5d4-i2c80 - atmel,sama5d2-i2c81 - microchip,sam9x60-i2c82 - microchip,sama7d65-i2c83 - microchip,sama7g5-i2c84 then:85 properties:86 i2c-sda-hold-time-ns:87 description:88 TWD hold time89 maxItems: 190 91unevaluatedProperties: false92 93examples:94 - |95 #include <dt-bindings/interrupt-controller/irq.h>96 #include <dt-bindings/dma/at91.h>97 #include <dt-bindings/gpio/gpio.h>98 99 i2c0: i2c@fff84000 {100 compatible = "atmel,at91sam9g20-i2c";101 reg = <0xfff84000 0x100>;102 interrupts = <12 IRQ_TYPE_LEVEL_HIGH 6>;103 #address-cells = <1>;104 #size-cells = <0>;105 clocks = <&twi0_clk>;106 clock-frequency = <400000>;107 108 eeprom@50 {109 compatible = "atmel,24c512";110 reg = <0x50>;111 pagesize = <128>;112 };113 };114 115 i2c1: i2c@f8034600 {116 compatible = "atmel,sama5d2-i2c";117 reg = <0xf8034600 0x100>;118 interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>;119 dmas = <&dma0120 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))121 AT91_XDMAC_DT_PERID(11)>,122 <&dma0123 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1))124 AT91_XDMAC_DT_PERID(12)>;125 dma-names = "tx", "rx";126 #address-cells = <1>;127 #size-cells = <0>;128 clocks = <&flx0>;129 atmel,fifo-size = <16>;130 i2c-sda-hold-time-ns = <336>;131 pinctrl-names = "default", "gpio";132 pinctrl-0 = <&pinctrl_i2c0>;133 pinctrl-1 = <&pinctrl_i2c0_gpio>;134 sda-gpios = <&pioA 30 GPIO_ACTIVE_HIGH>;135 scl-gpios = <&pioA 31 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;136 137 eeprom@54 {138 compatible = "atmel,24c02";139 reg = <0x54>;140 pagesize = <16>;141 };142 };143