[PATCH v4 1/5] dt-bindings: i2c: nvidia,tegra20-i2c: Document Tegra264 I2C
From: Kartik Rajput <hidden>
Date: 2025-08-18 09:24:51
Also in:
linux-i2c, linux-tegra, 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
Tegra264 has 17 generic I2C controllers, two of which are in always-on partition of the SoC. In addition to the features supported by Tegra194 it also supports a SW mutex register to allow sharing the same I2C instance across multiple firmware. Document compatible string "nvidia,tegra264-i2c" for Tegra264 I2C. Signed-off-by: Kartik Rajput <redacted> Acked-by: Conor Dooley <conor.dooley@microchip.com> --- v2 -> v3: * Add constraints for "nvidia,tegra264-i2c". v1 -> v2: * Fixed typos. --- .../devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
index 6b6f6762d122..f0693b872cb6 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml@@ -80,6 +80,12 @@ properties: support for 64 KiB transactions whereas earlier chips supported no more than 4 KiB per transactions. const: nvidia,tegra194-i2c + - description: + Tegra264 has 17 generic I2C controllers, two of which are in the AON + (always-on) partition of the SoC. In addition to the features from + Tegra194, a SW mutex register is added to support use of the same I2C + instance across multiple firmwares. + const: nvidia,tegra264-i2c reg: maxItems: 1
@@ -186,6 +192,7 @@ allOf: contains: enum: - nvidia,tegra194-i2c + - nvidia,tegra264-i2c then: required: - resets
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2.43.0