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

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Message-ID: <20250609-sizzle-shush-b2eb1443b3f7@spud>
Date: Mon, 9 Jun 2025 17:09:53 +0100
From: Conor Dooley <conor@...nel.org>
To: Kartik Rajput <kkartik@...dia.com>
Cc: akhilrajeev@...dia.com, 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,
	linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: i2c: nvidia,tegra20-i2c: Document
 Tegra264 I2C

On Mon, Jun 09, 2025 at 03:04:16PM +0530, Kartik Rajput wrote:
> 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@...dia.com>

Acked-by: Conor Dooley <conor.dooley@...rochip.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
> 

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