| Tom Rini | 6bb92fc | 2024-05-20 09:54:58 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/mfd/atmel,sama5d2-flexcom.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Microchip Flexcom (Flexible Serial Communication Unit) |
| 8 | |
| 9 | maintainers: |
| 10 | - Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com> |
| 11 | |
| 12 | description: |
| 13 | The Microchip Flexcom is just a wrapper which embeds a SPI controller, |
| 14 | an I2C controller and an USART. Only one function can be used at a |
| 15 | time and is chosen at boot time according to the device tree. |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | oneOf: |
| 20 | - const: atmel,sama5d2-flexcom |
| 21 | - items: |
| 22 | - const: microchip,sam9x7-flexcom |
| 23 | - const: atmel,sama5d2-flexcom |
| 24 | - items: |
| 25 | - const: microchip,sama7g5-flexcom |
| 26 | - const: atmel,sama5d2-flexcom |
| 27 | |
| 28 | |
| 29 | reg: |
| 30 | maxItems: 1 |
| 31 | |
| 32 | clocks: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | "#address-cells": |
| 36 | const: 1 |
| 37 | |
| 38 | "#size-cells": |
| 39 | const: 1 |
| 40 | |
| 41 | ranges: |
| 42 | description: |
| 43 | One range for the full I/O register region. (including USART, |
| 44 | TWI and SPI registers). |
| 45 | items: |
| 46 | maxItems: 3 |
| 47 | |
| 48 | atmel,flexcom-mode: |
| 49 | description: | |
| 50 | Specifies the flexcom mode as follows: |
| 51 | 1: USART |
| 52 | 2: SPI |
| 53 | 3: I2C. |
| 54 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 55 | enum: [1, 2, 3] |
| 56 | |
| 57 | patternProperties: |
| 58 | "^serial@[0-9a-f]+$": |
| 59 | type: object |
| 60 | description: |
| 61 | Child node describing USART. See atmel-usart.txt for details |
| 62 | of USART bindings. |
| 63 | |
| 64 | "^spi@[0-9a-f]+$": |
| 65 | type: object |
| 66 | description: |
| 67 | Child node describing SPI. See ../spi/spi_atmel.txt for details |
| 68 | of SPI bindings. |
| 69 | |
| 70 | "^i2c@[0-9a-f]+$": |
| 71 | $ref: /schemas/i2c/atmel,at91sam-i2c.yaml |
| 72 | description: |
| 73 | Child node describing I2C. |
| 74 | |
| 75 | required: |
| 76 | - compatible |
| 77 | - reg |
| 78 | - clocks |
| 79 | - "#address-cells" |
| 80 | - "#size-cells" |
| 81 | - ranges |
| 82 | - atmel,flexcom-mode |
| 83 | |
| 84 | additionalProperties: false |
| 85 | |
| 86 | examples: |
| 87 | - | |
| 88 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 89 | |
| 90 | flx0: flexcom@f8034000 { |
| 91 | compatible = "atmel,sama5d2-flexcom"; |
| 92 | reg = <0xf8034000 0x200>; |
| 93 | clocks = <&flx0_clk>; |
| 94 | #address-cells = <1>; |
| 95 | #size-cells = <1>; |
| 96 | ranges = <0x0 0xf8034000 0x800>; |
| 97 | atmel,flexcom-mode = <2>; |
| 98 | }; |
| 99 | ... |