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dt-bindings: i2c: add bindings for microchip mpfs i2c
Add device tree bindings for the i2c controller on the Microchip PolarFire SoC. Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Documentation/devicetree/bindings/i2c/microchip,corei2c.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) | ||
%YAML 1.2 | ||
--- | ||
$id: http://devicetree.org/schemas/i2c/microchip,corei2c.yaml# | ||
$schema: http://devicetree.org/meta-schemas/core.yaml# | ||
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title: Microchip MPFS I2C Controller Device Tree Bindings | ||
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maintainers: | ||
- Daire McNamara <daire.mcnamara@microchip.com> | ||
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allOf: | ||
- $ref: /schemas/i2c/i2c-controller.yaml# | ||
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properties: | ||
compatible: | ||
oneOf: | ||
- items: | ||
- const: microchip,mpfs-i2c # Microchip PolarFire SoC compatible SoCs | ||
- const: microchip,corei2c-rtl-v7 # Microchip Fabric based i2c IP core | ||
- const: microchip,corei2c-rtl-v7 # Microchip Fabric based i2c IP core | ||
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reg: | ||
maxItems: 1 | ||
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interrupts: | ||
maxItems: 1 | ||
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clocks: | ||
maxItems: 1 | ||
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clock-frequency: | ||
description: | | ||
Desired I2C bus clock frequency in Hz. As only Standard and Fast | ||
modes are supported, possible values are 100000 and 400000. | ||
enum: [100000, 400000] | ||
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required: | ||
- compatible | ||
- reg | ||
- interrupts | ||
- clocks | ||
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unevaluatedProperties: false | ||
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examples: | ||
- | | ||
i2c@2010a000 { | ||
compatible = "microchip,mpfs-i2c", "microchip,corei2c-rtl-v7"; | ||
reg = <0x2010a000 0x1000>; | ||
clocks = <&clkcfg 15>; | ||
interrupt-parent = <&plic>; | ||
interrupts = <58>; | ||
clock-frequency = <100000>; | ||
}; | ||
... |