linux-kernel - Re: [PATCHv6 1/2] i2c: designware: introduce a custom scl recovery for SoCFPGA platforms

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Message-ID: <Ys13SB17LKU0y/tU@shikoro>
Date:   Tue, 12 Jul 2022 15:29:44 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Dinh Nguyen <dinguyen@...nel.org>
Cc:     jarkko.nikula@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        mika.westerberg@...ux.intel.com, robh+dt@...nel.org,
        krzk+dt@...nel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCHv6 1/2] i2c: designware: introduce a custom scl recovery
 for SoCFPGA platforms

Hi Dinh,

> This is recovery of the master and not the slave.  We have a customer that

This is a different issue then. bus_recovery_info is only for stuck
clients, as I mentioned before. Resetting the controller can be done
anytime inside the driver by calling some reset routine. You don't need
an I2C core framework for that.

But when to do this reset, and how this relates to real bus recovery,
that you need to deal with the designware maintainers. I don't know the
HW at all.

All the best,

   Wolfram

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