linux-kernel - Re: [PATCH v7 6/7] i2c: mediatek: Isolate speed setting via dts for special devices

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Message-ID: <YVf+83LdUEPjoLdI@kunai>
Date:   Sat, 2 Oct 2021 08:40:51 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Kewei Xu <kewei.xu@...iatek.com>
Cc:     matthias.bgg@...il.com, robh+dt@...nel.org,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        leilk.liu@...iatek.com, qii.wang@...iatek.com,
        liguo.zhang@...iatek.com, caiyu.chen@...iatek.com,
        ot_daolong.zhu@...iatek.com, yuhan.wei@...iatek.com
Subject: Re: [PATCH v7 6/7] i2c: mediatek: Isolate speed setting via dts for
 special devices

On Fri, Sep 17, 2021 at 06:14:15PM +0800, Kewei Xu wrote:
> In the commit be5ce0e97cc7 ("i2c: mediatek: Add i2c ac-timing adjust
> support"), the I2C timing calculation has been revised to support
> ac-timing adjustment, however that will break on some I2C components.
> As a result we want to introduce a new setting "default-adjust-timing"
> so those components can choose to use the old (default) timing algorithm.

Why can't the new calculation be updated in a way that it works for all
I2C components?


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