linux-kernel - [PATCH 1/2] dt-bindings: i2c: nvidia,tegra20-i2c: Add Tegra256 I2C compatible

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Message-ID: <20250731091122.53921-2-akhilrajeev@nvidia.com>
Date: Thu, 31 Jul 2025 14:41:21 +0530
From: Akhil R <akhilrajeev@...dia.com>
To: <andi.shyti@...nel.org>, <conor+dt@...nel.org>,
	<devicetree@...r.kernel.org>, <digetx@...il.com>, <jonathanh@...dia.com>,
	<krzk+dt@...nel.org>, <linux-i2c@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
	<thierry.reding@...il.com>
CC: <akhilrajeev@...dia.com>, <ldewangan@...dia.com>, <robh@...nel.org>
Subject: [PATCH 1/2] dt-bindings: i2c: nvidia,tegra20-i2c: Add Tegra256 I2C compatible

Add compatible for Tegra256 I2C controllers. Tegra256 consists of
8 generic Tegra I2C controllers similar to previous generations.
The parent clock frequency is different in these controllers and
hence the timing parameter values are different from the previous
ones.

Signed-off-by: Akhil R <akhilrajeev@...dia.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 6b6f6762d122..6f58eb79a7b3 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
@@ -80,6 +80,11 @@ properties:
           support for 64 KiB transactions whereas earlier chips supported no
           more than 4 KiB per transactions.
         const: nvidia,tegra194-i2c
+      - description: |
+          Tegra256 has 8 generic I2C controllers. The controllers are similar to
+          the previous generations, but have a different parent clock and hence
+          the timing parameters are configured differently.
+        const: nvidia,tegra256-i2c
 
   reg:
     maxItems: 1
@@ -186,6 +191,7 @@ allOf:
             contains:
               enum:
                 - nvidia,tegra194-i2c
+                - nvidia,tegra256-i2c
     then:
       required:
         - resets
-- 
2.50.1