linux-kernel - Re: [PATCH v2] i2c: aspeed: disable additional device addresses on ast2[56]xx

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Message-ID: <YK/3M94uwuLQNwbz@kunai>
Date:   Thu, 27 May 2021 21:46:59 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Zev Weiss <zev@...ilderbeest.net>
Cc:     Brendan Higgins <brendanhiggins@...gle.com>,
        Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Andrew Jeffery <andrew@...id.au>, linux-i2c@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] i2c: aspeed: disable additional device addresses on
 ast2[56]xx

On Thu, May 06, 2021 at 03:54:19PM -0500, Zev Weiss wrote:
> The ast25xx and ast26xx have, respectively, two and three configurable
> slave device addresses to the ast24xx's one.  We only support using
> one at a time, but the others may come up in an indeterminate state
> depending on hardware/bootloader behavior, so we need to make sure we
> disable them so as to avoid ending up with phantom devices on the bus.
> 
> Signed-off-by: Zev Weiss <zev@...ilderbeest.net>

Applied to for-next, thanks!


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