Device tree configuration for the Mellanox I2C SMBus on BlueField SoCs
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Required Properties:
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- compatible : should be "mellanox,i2c-mlxbf1" or "mellanox,i2c-mlxbf2".
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- reg : address offset and length of the device registers. The
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registers consist of the following set of resources:
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1) Smbus block registers.
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2) Cause master registers.
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3) Cause slave registers.
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4) Cause coalesce registers (if compatible isn't set
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to "mellanox,i2c-mlxbf1").
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- interrupts : interrupt number.
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Optional Properties:
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- clock-frequency : bus frequency used to configure timing registers;
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allowed values are 100000, 400000 and 1000000;
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those are expressed in Hz. Default is 100000.
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Example:
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i2c@2804000 {
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compatible = "mellanox,i2c-mlxbf1";
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reg = <0x02804000 0x800>,
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<0x02801200 0x020>,
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<0x02801260 0x020>;
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interrupts = <57>;
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clock-frequency = <100000>;
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};
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i2c@2808800 {
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compatible = "mellanox,i2c-mlxbf2";
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reg = <0x02808800 0x600>,
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<0x02808e00 0x020>,
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<0x02808e20 0x020>,
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<0x02808e40 0x010>;
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interrupts = <57>;
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clock-frequency = <400000>;
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};
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