linux-kernel - Re: [PATCH 2/7] dt-bindings: i2c: mux: mule: add dt-bindings for mule i2c multiplexer

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Date: Thu, 2 May 2024 14:14:02 +0200
From: Farouk Bouabid <farouk.bouabid@...obroma-systems.com>
To: Rob Herring <robh@...nel.org>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
 Peter Rosin <peda@...ntia.se>, Andi Shyti <andi.shyti@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Quentin Schulz <quentin.schulz@...obroma-systems.com>,
 Heiko Stuebner <heiko@...ech.de>, linux-i2c@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 2/7] dt-bindings: i2c: mux: mule: add dt-bindings for mule
 i2c multiplexer

Hi Rob,

On 29.04.24 15:56, Rob Herring wrote:
> On Fri, Apr 26, 2024 at 11:50 AM Farouk Bouabid
> <farouk.bouabid@...obroma-systems.com> wrote:
>> This patch adds support for the Mule I2C multiplexer.
>>
>> Mule is an mcu that emulates a set of i2c devices which are reacheable
> MCU
>
> reachable
>
>> through an i2c-mux.
>>
>> The emulated devices share a single i2c address with the mux itself where
>> the requested register is what determines which logic is executed (mux or
>> device).
> Just to be sure, we need a complete binding for the MCU. Is this the
> only thing the MCU does?


Currently that is all the MCU does. We plan to add more features to the 
MCU firmware: Buzzer over i2c, watchdog over i2c ...


Best regards

Farouk