From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.intel.com (client-ip=134.134.136.31; helo=mga06.intel.com; envelope-from=jae.hyun.yoo@linux.intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45VtmK480MzDqPM for ; Sat, 22 Jun 2019 08:34:56 +1000 (AEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Jun 2019 15:34:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,402,1557212400"; d="scan'208";a="171372219" Received: from yoojae-mobl1.amr.corp.intel.com (HELO [10.7.153.148]) ([10.7.153.148]) by orsmga002.jf.intel.com with ESMTP; 21 Jun 2019 15:34:53 -0700 Subject: Re: [RFC PATCH dev-5.1 5/6] i2c: aspeed: add buffer mode transfer support To: Tao Ren , Brendan Higgins , Benjamin Herrenschmidt , C?ric Le Goater , Joel Stanley , Andrew Jeffery Cc: "openbmc@lists.ozlabs.org" References: <20190620194922.15093-1-jae.hyun.yoo@linux.intel.com> <20190620194922.15093-6-jae.hyun.yoo@linux.intel.com> <03abb910-c3aa-07af-1c08-8df83a1425e2@fb.com> From: Jae Hyun Yoo Message-ID: Date: Fri, 21 Jun 2019 15:34:53 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 MIME-Version: 1.0 In-Reply-To: <03abb910-c3aa-07af-1c08-8df83a1425e2@fb.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Jun 2019 22:34:58 -0000 On 6/21/2019 3:29 PM, Tao Ren wrote: > On 6/20/19 12:49 PM, Jae Hyun Yoo wrote: >> Byte mode currently this driver uses makes lots of interrupt call >> which isn't good for performance and it makes the driver very >> timing sensitive. To improve performance of the driver, this commit >> adds buffer mode transfer support which uses I2C SRAM buffer >> instead of using a single byte buffer. >> >> Signed-off-by: Jae Hyun Yoo > > Let me apply the patch to my ast2500 BMC platform and will share results earlier next week. Thanks Tao! It would be helpful. Regards, Jae > Cheers, > > Tao >