[PATCH v3 2/9] dt-bindings: i2c: add bindings for i2c analog and digital filter
From: <hidden>
Date: 2019-07-09 13:19:40
Also in:
linux-devicetree, linux-i2c, lkml
Subsystem:
i2c subsystem host drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Andi Shyti, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Eugen Hristev <redacted> Some i2c controllers have a built-in digital or analog filter. This is specifically required depending on the hardware PCB/board. Some controllers also allow specifying the maximum width of the spikes that can be filtered. The width length can be specified in nanoseconds. Signed-off-by: Eugen Hristev <redacted> --- Documentation/devicetree/bindings/i2c/i2c.txt | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index 44efafd..a2d31aa 100644
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt@@ -55,6 +55,17 @@ 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-ana-filter + Enable analog filter for i2c lines. + +- i2c-dig-filter + Enable digital filter for i2c lines. + +- i2c-filter-width-ns + Width of spikes which can be filtered by either digital or analog + filters (i2c-ana-filtr or i2c-dig-filtr). This width is specified + in nanoseconds. + - interrupts interrupts used by the device.
--
2.7.4
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