From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: Re: [PATCH] i2c: designware: Get selected speed mode sda-hold-time via ACPI Date: Tue, 14 Feb 2017 09:00:43 +0200 Message-ID: <9287736c-7b7e-4fff-5126-d101044fd00f@linux.intel.com> References: <1487051641-31927-1-git-send-email-chin.yew.tan@intel.com> <1487051641-31927-2-git-send-email-chin.yew.tan@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com ([134.134.136.20]:1895 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750756AbdBNHAq (ORCPT ); Tue, 14 Feb 2017 02:00:46 -0500 In-Reply-To: <1487051641-31927-2-git-send-email-chin.yew.tan@intel.com> Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: chin.yew.tan@intel.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com Cc: linux-i2c@vger.kernel.org On 14.02.2017 07:54, chin.yew.tan@intel.com wrote: > From: Tan Chin Yew > > Sda-hold-time is an important parameter for tuning i2c to meet the > electrical specification especially for high speed. I2C with incorrect > sda-hold-time may cause lost arbitration error. Now, the driver is able to > get sda-hold-time for all the speed supported. > > Signed-off-by: Tan Chin Yew > --- > drivers/i2c/busses/i2c-designware-platdrv.c | 28 +++++++++++++++++++++------- > 1 file changed, 21 insertions(+), 7 deletions(-) > Acked-by: Jarkko Nikula