linux-kernel - Re: [PATCH v2 4/4] i2c: piix4: Register SPDs

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Message-ID: <31621384-9ddf-46ba-8784-914a02c9958b@roeck-us.net>
Date: Sat, 29 Jun 2024 07:01:54 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Andi Shyti <andi.shyti@...nel.org>, Jean Delvare <jdelvare@...e.com>,
 linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
 Wolfram Sang <wsa+renesas@...g-engineering.com>,
 Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH v2 4/4] i2c: piix4: Register SPDs

On 6/29/24 00:19, Thomas Weißschuh wrote:
> On 2024-06-28 16:09:09+0000, Guenter Roeck wrote:
>> On 6/27/24 10:48, Thomas Weißschuh wrote:
>>> The piix4 I2C bus can carry SPDs, register them if present.
>>> Only look on bus 0, as this is where the SPDs seem to be located.
>>>
>>> Only the first 8 slots are supported. If the system has more,
>>> then these will not be visible.
>>>
>>> The AUX bus can not be probed as on some platforms it reports all
>>> devices present and all reads return "0".
>>> This would allow the ee1004 to be probed incorrectly.
>>
>> Was this reported somewhere ? I don't see it happen on any of my systems
>> (of course that doesn't really mean anything).
> 
> It happened on one of the big server systems I tested on.
> 
>>> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
>>
>> Reviewed-and-tested-by: Guenter Roeck <linux@...ck-us.net>
> 
> Thanks!
> 
> FYI, combined tags are discouraged by
> Documentation/process/maintainer-tip.rst:
> 
>    Please do not use combined tags, e.g. ``Reported-and-tested-by``, as
>    they just complicate automated extraction of tags.
> 
> I'll add the tags in split form to the patch.
> 
> 
> Thomas