linux-kernel - Re: [PATCH v2 1/4] dt-bindings: i2c: renesas,riic: Document R9A09G057 support

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Date: Sun, 17 Mar 2024 13:57:31 -0600
From: Rob Herring <robh@...nel.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>,
	Chris Brandt <chris.brandt@...esas.com>,
	Andi Shyti <andi.shyti@...nel.org>,
	linux-renesas-soc@...r.kernel.org,
	Magnus Damm <magnus.damm@...il.com>, devicetree@...r.kernel.org,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Rob Herring <robh+dt@...nel.org>, linux-i2c@...r.kernel.org
Subject: Re: [PATCH v2 1/4] dt-bindings: i2c: renesas,riic: Document
 R9A09G057 support


On Fri, 15 Mar 2024 10:30:30 +0000, Prabhakar wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> 
> Document support for the I2C Bus Interface (RIIC) available in the
> Renesas RZ/V2H(P) (R9A09G057) SoC.
> 
> The RIIC interface in the Renesas RZ/V2H(P) differs from RZ/A in a
> couple of ways:
> - Register offsets for the RZ/V2H(P) SoC differ from those of the
>   RZ/A SoC.
> - RZ/V2H register access is limited to 8-bit, whereas RZ/A supports
>   8/16/32-bit.
> - RZ/V2H has bit differences in the slave address register.
> 
> To accommodate these differences in the existing driver, a new compatible
> string "renesas,riic-r9a09g057" is added.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
> v1->v2
> - Used a const for V2H SoC instead of enum in items list
> ---
>  .../devicetree/bindings/i2c/renesas,riic.yaml | 19 +++++++++++--------
>  1 file changed, 11 insertions(+), 8 deletions(-)
> 

Acked-by: Rob Herring <robh@...nel.org>