diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 44efafdfd7f5c..9a53df4243c64 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -55,6 +55,24 @@ wants to support one of the below features, it should adapt the bindings below. Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C specification. +- i2c-analog-filter + Enable analog filter for i2c lines. + +- i2c-digital-filter + Enable digital filter for i2c lines. + +- i2c-digital-filter-width-ns + Width of spikes which can be filtered by digital filter + (i2c-digital-filter). This width is specified in nanoseconds. + +- i2c-analog-filter-cutoff-frequency + Frequency that the analog filter (i2c-analog-filter) uses to distinguish + which signal to filter. Signal with higher frequency than specified will + be filtered out. Only lower frequency will pass (this is applicable to + a low-pass analog filter). Typical value should be above the normal + i2c bus clock frequency (clock-frequency). + Specified in Hz. + - interrupts interrupts used by the device.