From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chaotian Jing Subject: [PATCH v5 12/12] mmc: mediatek: perfer to use rise edge latching for cmd line Date: Wed, 11 Oct 2017 10:41:36 +0800 Message-ID: <1507689696-25928-13-git-send-email-chaotian.jing@mediatek.com> References: <1507689696-25928-1-git-send-email-chaotian.jing@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from mailgw02.mediatek.com ([210.61.82.184]:53560 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S932768AbdJKCm2 (ORCPT ); Tue, 10 Oct 2017 22:42:28 -0400 In-Reply-To: <1507689696-25928-1-git-send-email-chaotian.jing@mediatek.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson Cc: Rob Herring , Mark Rutland , Matthias Brugger , Catalin Marinas , Will Deacon , Chaotian Jing , yong mao , Linus Walleij , Heiner Kallweit , Phong LE , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, srv_heupstream@mediatek.com 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 95759bb..27a6225 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1550,7 +1550,8 @@ 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); -- 1.8.1.1.dirty