linux-kernel - [PATCH v3 1/3] dt-bindings: i2c: nvidia,tegra20-i2c: Specify the required properties

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Message-ID: <20250526052553.42766-1-akhilrajeev@nvidia.com>
Date: Mon, 26 May 2025 10:55:51 +0530
From: Akhil R <akhilrajeev@...dia.com>
To: <andi.shyti@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <thierry.reding@...il.com>, <jonathanh@...dia.com>,
	<ldewangan@...dia.com>, <digetx@...il.com>, <p.zabel@...gutronix.de>,
	<linux-i2c@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Akhil R <akhilrajeev@...dia.com>
Subject: [PATCH v3 1/3] dt-bindings: i2c: nvidia,tegra20-i2c: Specify the required properties

Specify the properties which are essential for the Tegra I2C driver to
function correctly. Though all the existing DT nodes have these
properties already, it was not mandated by the DT bindings.

Signed-off-by: Akhil R <akhilrajeev@...dia.com>
---
v2->v3:
  * Updated commit description on the details and fixed indentation
    issue.
v1->v2:
  * Added all required properties

 .../bindings/i2c/nvidia,tegra20-i2c.yaml      | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
index b57ae6963e62..c1d38e6ff7d7 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml
@@ -97,7 +97,9 @@ properties:
 
   resets:
     items:
-      - description: module reset
+      - description: |
+          Module reset. This property is optional for controllers in Tegra194 and later
+          chips where an internal software reset is available as an alternative.
 
   reset-names:
     items:
@@ -116,6 +118,13 @@ properties:
       - const: rx
       - const: tx
 
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
 allOf:
   - $ref: /schemas/i2c/i2c-controller.yaml
   - if:
@@ -169,6 +178,18 @@ allOf:
       properties:
         power-domains: false
 
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - nvidia,tegra194-i2c
+    then:
+      required:
+        - resets
+        - reset-names
+
 unevaluatedProperties: false
 
 examples:
-- 
2.43.2