[PATCH v4 1/2] dt-bindings: i2c-mux: Add property for settle time
From: Horatiu Vultur <horatiu.vultur@microchip.com>
Date: 2021-11-03 09:18:27
Also in:
linux-i2c, lkml
Subsystem:
i2c muxes, i2c subsystem host drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Peter Rosin, Andi Shyti, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Some HW requires some time for the signals to settle after the muxing is changed. Allow this time to be specified in device tree. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> --- Documentation/devicetree/bindings/i2c/i2c-mux.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux.yaml
index 24cac36037f5..4c81e56d02f7 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux.yaml@@ -19,6 +19,11 @@ description: |+ populating the i2c child busses. If an 'i2c-mux' subnode is present, only subnodes of this will be considered as i2c child busses. + Optional properties may not be supported by all drivers. However, if a driver + wants to support one of the below features, it should adopt these bindings. + +select: false + properties: $nodename: pattern: '^(i2c-?)?mux'
@@ -29,6 +34,11 @@ properties: '#size-cells': const: 0 + settle-time-us: + default: 0 + description: + The time required for the signals to settle. + patternProperties: '^i2c@[0-9a-f]+$': $ref: /schemas/i2c/i2c-controller.yaml
@@ -41,6 +51,10 @@ patternProperties: additionalProperties: true +required: + - '#address-cells' + - '#size-cells' + examples: - | /*
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2.33.0