[PATCH 2/5] dt-bindings: i2c: nvidia,tegra20-i2c: Document Tegra264 I2C

[Kartik Rajput <kkartik@nvidia.com>]

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 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>
---
 .../devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml         | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
index b57ae6963e62..2a016359328e 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
+          T194, a MUTEX register is added to support use of the same I2C
+          instance across multiple firmware.
+        const: nvidia,tegra264-i2c
 
   reg:
     maxItems: 1
-- 
2.43.0