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-rw-r--r--Documentation/devicetree/bindings/i2c/i2c.txt18
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index 44efafdfd7f5..9a53df4243c6 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.