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Date:   Fri, 18 Dec 2020 15:39:52 -0600
From:   Zev Weiss <>
To:     Brendan Higgins <>,
        Benjamin Herrenschmidt <>,
        Joel Stanley <>,
        Andrew Jeffery <>,,,,,
Subject: Re: [PATCH] i2c: aspeed: disable additional device addresses on

On Tue, Sep 15, 2020 at 01:45:25PM CDT, 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 <>
> drivers/i2c/busses/i2c-aspeed.c | 50 +++++++++++++++++++++++++++------
> 1 file changed, 41 insertions(+), 9 deletions(-)
> <snip>

Ping...any thoughts on this patch?


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