linux-kernel - Re: [PATCH] i2c: enable async suspend/resume on i2c devices

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Message-ID: <CAHp75VfXXdzmp7M8rpcYTTKzwMT=QKt=_m7m7Bfp7uM4izMkrQ@mail.gmail.com>
Date:   Fri, 27 Jul 2018 13:44:56 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Derek Basehore <dbasehore@...omium.org>,
        Hans de Goede <hdegoede@...hat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Wolfram Sang <wsa@...-dreams.de>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        Douglas Anderson <dianders@...omium.org>,
        Dmitry Torokhov <dtor@...omium.org>,
        venkateswarlu.v.vinjamuri@...el.corp-partner.google.com
Subject: Re: [PATCH] i2c: enable async suspend/resume on i2c devices

On Fri, Jul 27, 2018 at 1:55 AM, Derek Basehore <dbasehore@...omium.org> wrote:
> This enables the async suspend property for i2c devices. This reduces
> the suspend/resume time considerably on platforms with multiple i2c
> devices (such as a trackpad or touchscreen).

How did you test this?

Especially on Chromebooks based on Intel Cherrytrail / Braswell
platforms, they have a painful PMIC vs. OS design solution.

+Cc: Hans, who did a lot in this area.

-- 
With Best Regards,
Andy Shevchenko