linux-kernel - Re: [PATCH v9 2/2] i2c: riic: Recover from arbitration loss

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Message-ID: <aBKFWxIRaa4W7TDf@shikoro>
Date: Wed, 30 Apr 2025 22:17:31 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Chris Brandt <chris.brandt@...esas.com>,
	Andi Shyti <andi.shyti@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Andy Shevchenko <andy@...nel.org>,
	linux-renesas-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v9 2/2] i2c: riic: Recover from arbitration loss


> Add support for detecting arbitration loss in the RIIC controller. For
> certain slave devices, it was observed that after I2C recovery, the
> transmission triggered an arbitration loss. To handle this, initiate
> the I2C recovery sequence and retry the transfer.

Does it maybe work even without triggering recovery again? A pure
arbitration loss should not need a recovery procedure.


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