From patchwork Tue Sep 12 09:07:52 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chaotian Jing X-Patchwork-Id: 9948729 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 70A7C60325 for ; Tue, 12 Sep 2017 09:08:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5E9C128E3A for ; Tue, 12 Sep 2017 09:08:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5365528E3C; Tue, 12 Sep 2017 09:08:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C312328E3A for ; Tue, 12 Sep 2017 09:08:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751684AbdILJI4 (ORCPT ); Tue, 12 Sep 2017 05:08:56 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:26888 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751615AbdILJIf (ORCPT ); Tue, 12 Sep 2017 05:08:35 -0400 X-UUID: b4ae96c99de4495cbe0224e92fd9aee3-20170912 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 360871849; Tue, 12 Sep 2017 17:08:30 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Tue, 12 Sep 2017 17:08:29 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Tue, 12 Sep 2017 17:08:28 +0800 From: Chaotian Jing To: Ulf Hansson CC: Rob Herring , Mark Rutland , Matthias Brugger , Catalin Marinas , Will Deacon , Chaotian Jing , yong mao , Linus Walleij , Javier Martinez Canillas , Heiner Kallweit , Phong LE , , , , , , Subject: [PATCH 12/12] mmc: mediatek: perfer to use rise edge latching for cmd line Date: Tue, 12 Sep 2017 17:07:52 +0800 Message-ID: <1505207272-16983-13-git-send-email-chaotian.jing@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1505207272-16983-1-git-send-email-chaotian.jing@mediatek.com> References: <1505207272-16983-1-git-send-email-chaotian.jing@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP data lines have applied to perfer to use rise edge, also need apply it to cmd line. Signed-off-by: Chaotian Jing --- drivers/mmc/host/mtk-sd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 49d4d79..9f21cdb 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1554,7 +1554,8 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode) } final_rise_delay = get_best_delay(host, rise_delay); /* if rising edge has enough margin, then do not scan falling edge */ - if (final_rise_delay.maxlen >= 12 && final_rise_delay.start < 4) + if (final_rise_delay.maxlen >= 12 || + (final_rise_delay.start == 0 && final_rise_delay.maxlen >= 4)) goto skip_fall; sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);