From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adrian Hunter Subject: Re: [PATCH V4 00/15] mmc: host: Add facility to support re-tuning Date: Fri, 10 Apr 2015 13:39:51 +0300 Message-ID: <5527A877.9030204@intel.com> References: <1427489863-9050-1-git-send-email-adrian.hunter@intel.com> <551B8E7B.9020605@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com ([134.134.136.20]:30175 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932386AbbDJKl6 (ORCPT ); Fri, 10 Apr 2015 06:41:58 -0400 In-Reply-To: <551B8E7B.9020605@intel.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson Cc: linux-mmc , Aaron Lu , Philip Rakity , Al Cooper , Arend van Spriel On 01/04/15 09:21, Adrian Hunter wrote: > On 27/03/15 22:57, Adrian Hunter wrote: >> Hi >> >> Here is V4 of some patches to move re-tuning support >> out of sdhci and into the core, and add support for HS400 >> re-tuning. >> >> Currently sdhci does re-tuning transparently by >> calling sdhci_execute_tuning() from its ->request() >> function. >> >> The problem with HS400 re-tuning is that it must be >> done in HS200 mode. That means using switch commands >> and making ios changes. That means it potentially >> conflicts with other command sequences. The new >> re-tuning support accomodates that. >> >> These patches now depend on Ulf's patch: >> >> mmc: core: Enable runtime PM management of host devices >> >> >> Changes in V4: >> >> mmc: host: Add facility to support re-tuning >> >> Assume mmc_claim_host() runtime resumes the host >> controller so there are no races with runtime pm. >> Consequently remove now un-needed re-tuning host >> operations. >> >> mmc: core: Add support for re-tuning before each request >> >> Call mmc_retune() prior to ->request() >> >> mmc: sdhci: Change to new way of doing re-tuning >> >> Updated to reflect the changes above. > > Hi > > What is the status of this? Hi What needs to be done to move this forward? Regards Adrian