From: jarkko.nikula@linux.intel.com (Jarkko Nikula)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] i2c:dw: Add APM X-Gene ACPI I2C device support
Date: Wed, 16 Dec 2015 14:53:02 +0200 [thread overview]
Message-ID: <56715EAE.4080006@linux.intel.com> (raw)
In-Reply-To: <20151216090454.GL1762@lahna.fi.intel.com>
On 12/16/2015 11:04 AM, Mika Westerberg wrote:
> On Tue, Dec 15, 2015 at 11:20:03AM -0800, Loc Ho wrote:
>> Can we not just add an AML method that will return the operation clock
>> frequency that the I2C driver can use? If the method doesn't existed,
>> we will just bail and do nothing or assume what ever default behavior?
>
> Why would you add yet another method? There already are existing ACPI
> *CNT methods that you can use, and are used in systems out there.
One thing to remember that *CNT methods allow more precise machine and
per bus specific tunings against different HW characteristics like
pull-up resistance, line load, propagation delay, etc.
--
Jarkko
next prev parent reply other threads:[~2015-12-16 12:53 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 21:19 [PATCH v2 0/2] i2c:dw: Add APM X-Gene ACPI I2C device support Loc Ho
2015-12-10 21:19 ` [PATCH v2 1/2] acpi:apd: " Loc Ho
2015-12-11 1:13 ` Ken Xue
2015-12-10 21:19 ` [PATCH v2 2/2] i2c:dw: " Loc Ho
2015-12-15 0:53 ` [PATCH v2 0/2] " Suravee Suthikulanit
2015-12-15 13:27 ` Mika Westerberg
2015-12-15 14:52 ` Suravee Suthikulpanit
2015-12-15 14:59 ` Mika Westerberg
2015-12-15 19:20 ` Loc Ho
2015-12-16 9:04 ` Mika Westerberg
2015-12-16 12:53 ` Jarkko Nikula [this message]
2015-12-23 9:34 ` Ken Xue
2015-12-23 9:52 ` Mika Westerberg
2015-12-23 9:59 ` Ken Xue
2015-12-23 10:17 ` Mika Westerberg
2015-12-23 10:02 ` Zheng, Ivan
2015-12-23 10:09 ` Mika Westerberg
2015-12-23 11:24 ` Zheng, Ivan
2015-12-23 11:40 ` Mika Westerberg
2016-01-04 9:09 ` Ben Dooks
2016-01-03 0:54 ` Rafael J. Wysocki
2016-01-04 6:23 ` Loc Ho
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