linux-kernel - Re: [PATCH v2] AMD_SFH: Add a DMI quirk entry for Chromebooks

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Date:   Fri, 15 Jul 2022 13:45:45 +0900
From:   Akihiko Odaki <akihiko.odaki@...il.com>
To:     Basavaraj Natikar <bnatikar@....com>
Cc:     Basavaraj Natikar <basavaraj.natikar@....com>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mario Limonciello <mario.limonciello@....com>
Subject: Re: [PATCH v2] AMD_SFH: Add a DMI quirk entry for Chromebooks

On 2022/07/15 13:41, Basavaraj Natikar wrote:
> 
> 
> On 7/14/2022 11:07 AM, Akihiko Odaki wrote:
>> Google Chromebooks use Chrome OS Embedded Controller Sensor Hub instead
>> of Sensor Hub Fusion and leaves MP2 uninitialized, which disables all
>> functionalities, even including the registers necessary for feature
>> detections.
>>
>> The behavior was observed with Lenovo ThinkPad C13 Yoga.
>>
>>
> This driver should not get loaded in chrome OS by default.
> Could you please provide details of Chrome OS Version and Kernel version to confirm the behavior.
> 
> Are you enabling manually CONFIG_AMD_SFH_HID config?
> 
> Thanks,
> Basavaraj
> 

I use Fedora 36, not Chrome OS. The config is enabled on Fedora's 
generic kernel. The kernel is built from commit 
78ca55889a549a9a194c6ec666836329b774ab6d from the upstream.

Regards,
Akihiko Odaki