From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF888C433EF for ; Wed, 20 Oct 2021 12:20:59 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3DBB061373 for ; Wed, 20 Oct 2021 12:20:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3DBB061373 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.denx.de Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id E712483405; Wed, 20 Oct 2021 14:20:56 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1634732457; bh=CuRuvUGVT882L4mxD0R9Er3cfOLW4jiafY0eeANXSN8=; h=From:To:Subject:In-reply-to:Date:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From; b=MqB6bnZMs7/T1O7NeiZ4NdrqorAik8NOdj8p0kdgIS3+g2+ljYimoKkxwkLR4KhUI syI5AWTVUYgV0mrZjC6GrNqGOeXwxc9LMP4kwTzc8jv2+LHEOCfsFGsrxT4cPVLUJt e2BuCF42kEzde+0u3akEUoq9hT42t7z9f72JeAvRl/yvVYdkZPPYehpCHVB97I8xLd KH89Kl7UxqgoW0DamdbXf2gT9L5KLqpPba23IS7Fk8r4Ijp4iBvWlpY73IY9t/sM6b uqdu1+PwQF4chaY56GGTqTgiZQqvimGjQHJGc4G2kA5sZqkrwkFdkfKxIT1ZGEHZPP xoZmqOAdM0ZdQ== Received: by phobos.denx.de (Postfix, from userid 109) id 1B70A833F4; Wed, 20 Oct 2021 14:20:36 +0200 (CEST) Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 82D7B833E4 for ; Wed, 20 Oct 2021 14:20:30 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=fail smtp.mailfrom=sbabic@denx.de Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4HZ8p61VTCz1sGfF; Wed, 20 Oct 2021 14:20:30 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4HZ8p60ZBfz1qqkH; Wed, 20 Oct 2021 14:20:30 +0200 (CEST) X-Amavis-Alert: BAD HEADER SECTION, Missing required header field: "Date" Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id 1VTxQDT1Yh-a; Wed, 20 Oct 2021 14:20:29 +0200 (CEST) Received: from papero (host-88-217-136-221.customer.m-online.net [88.217.136.221]) by mail.mnet-online.de (Postfix) with ESMTP; Wed, 20 Oct 2021 14:20:29 +0200 (CEST) From: sbabic@denx.de X-Patchwork-Submitter: Oleksandr Suvorov X-Patchwork-Id: 1525993 X-Patchwork-Delegate: sbabic@denx.de To: Oleksandr Suvorov ,u-boot@lists.denx.de Subject: [PATCH v3 2/2] mmc: sdhci-esdhc-imx: Add HS400 support for iMX7ULP In-reply-to: <20210908215616.v3.2.89dae794dc03b6dfca7994ee9274ca487cd52a89@changeid> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Message-Id: <20211020122036.1B70A833F4@phobos.denx.de> Date: Wed, 20 Oct 2021 14:20:31 +0200 (CEST) X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean > Import HS400 support for iMX7ULP B0 from the Linux kernel: > 2eaf5a533afd ("mmc: sdhci-esdhc-imx: Add HS400 support for iMX7ULP") > According to IC suggest, need to clear the STROBE_DLL_CTRL_RESET > before any setting of STROBE_DLL_CTRL register. > USDHC has register bits(bit[27~20] of register STROBE_DLL_CTRL) > for slave sel value. If this register bits value is 0, it needs > 256 ref_clk cycles to update slave sel value. IC suggest to set > bit[27~20] to 0x4, it only need 4 ref_clk cycle to update slave > sel value. This will short the lock time of slave. > i.MX7ULP B0 will need more time to lock the REF and SLV, so change > to add 5us delay. > Signed-off-by: Oleksandr Suvorov > Reviewed-by: Fabio Estevam > Reviewed-by: Jaehoon Chung > Reviewed-by: Igor Opaniuk Applied to u-boot-imx, master, thanks ! Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic@denx.de =====================================================================