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Diffstat (limited to 'dts/Bindings/i2c/mellanox,i2c-mlxbf.txt')
| -rw-r--r-- | dts/Bindings/i2c/mellanox,i2c-mlxbf.txt | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/dts/Bindings/i2c/mellanox,i2c-mlxbf.txt b/dts/Bindings/i2c/mellanox,i2c-mlxbf.txt new file mode 100644 index 0000000000..566ea861aa --- /dev/null +++ b/dts/Bindings/i2c/mellanox,i2c-mlxbf.txt @@ -0,0 +1,42 @@ +Device tree configuration for the Mellanox I2C SMBus on BlueField SoCs + +Required Properties: + +- compatible : should be "mellanox,i2c-mlxbf1" or "mellanox,i2c-mlxbf2". + +- reg : address offset and length of the device registers. The + registers consist of the following set of resources: + 1) Smbus block registers. + 2) Cause master registers. + 3) Cause slave registers. + 4) Cause coalesce registers (if compatible isn't set + to "mellanox,i2c-mlxbf1"). + +- interrupts : interrupt number. + +Optional Properties: + +- clock-frequency : bus frequency used to configure timing registers; + allowed values are 100000, 400000 and 1000000; + those are expressed in Hz. Default is 100000. + +Example: + +i2c@2804000 { + compatible = "mellanox,i2c-mlxbf1"; + reg = <0x02804000 0x800>, + <0x02801200 0x020>, + <0x02801260 0x020>; + interrupts = <57>; + clock-frequency = <100000>; +}; + +i2c@2808800 { + compatible = "mellanox,i2c-mlxbf2"; + reg = <0x02808800 0x600>, + <0x02808e00 0x020>, + <0x02808e20 0x020>, + <0x02808e40 0x010>; + interrupts = <57>; + clock-frequency = <400000>; +}; |