linux-kernel - Re: [PATCH] mfd: intel-lpss: Add default I2C device properties for Apollo Lake

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160912134353.GH1811@lahna.fi.intel.com>
Date:   Mon, 12 Sep 2016 16:43:53 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Paul Liu <paul.liu@...onical.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH] mfd: intel-lpss: Add default I2C device properties for
 Apollo Lake

On Mon, Sep 12, 2016 at 02:41:33PM +0300, Jarkko Nikula wrote:
> Default I2C device properties for Intel Broxton, especially SDA hold time
> may not be enough on Intel Apollo Lake. These properties are used in case
> we don't get timing parameters from ACPI.
> 
> The default SDA hold time for Broxton may fail with arbitration lost errors
> on Apollo Lake:
> 
>   i2c_designware i2c_designware.1: i2c_dw_handle_tx_abort: lost arbitration
> 
> Fix this by using different default device properties on Apollo Lake than
> Broxton.
> 
> Reported-by: Paul Liu <paul.liu@...onical.com>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=156181
> Signed-off-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>

Acked-by: Mika Westerberg <mika.westerberg@...ux.intel.com>