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73 lines
1.6 KiB
73 lines
1.6 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/i2c/aspeed,i2c.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: ASPEED I2C on the AST24XX, AST25XX, and AST26XX SoCs Device Tree Bindings |
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maintainers: |
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- Rayn Chen <[email protected]> |
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allOf: |
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- $ref: /schemas/i2c/i2c-controller.yaml# |
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properties: |
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compatible: |
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enum: |
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- aspeed,ast2400-i2c-bus |
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- aspeed,ast2500-i2c-bus |
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- aspeed,ast2600-i2c-bus |
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reg: |
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minItems: 1 |
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items: |
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- description: address offset and range of bus |
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- description: address offset and range of bus buffer |
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interrupts: |
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maxItems: 1 |
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clocks: |
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maxItems: 1 |
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description: |
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root clock of bus, should reference the APB |
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clock in the second cell |
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resets: |
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maxItems: 1 |
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bus-frequency: |
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minimum: 500 |
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maximum: 4000000 |
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default: 100000 |
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description: frequency of the bus clock in Hz defaults to 100 kHz when not |
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specified |
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multi-master: |
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type: boolean |
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description: |
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states that there is another master active on this bus |
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required: |
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- reg |
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- compatible |
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- clocks |
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- resets |
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unevaluatedProperties: false |
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examples: |
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- | |
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#include <dt-bindings/clock/aspeed-clock.h> |
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i2c0: i2c-bus@40 { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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compatible = "aspeed,ast2500-i2c-bus"; |
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reg = <0x40 0x40>; |
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clocks = <&syscon ASPEED_CLK_APB>; |
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resets = <&syscon ASPEED_RESET_I2C>; |
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bus-frequency = <100000>; |
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interrupts = <0>; |
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interrupt-parent = <&i2c_ic>; |
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};
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