[PATCH v3 1/5] dt-bindings: i2c: nvidia,tegra20-i2c: Document Tegra264 I2C

Kartik Rajput
2025-06-09T09:34:44Z

iTegra264 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 <kkartik@nvidia.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
--
2.43.0