From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from proxy41133.mail.163.com (proxy25213.mail.163.com [103.129.252.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F07EBDDA9; Mon, 7 Jul 2025 07:23:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.129.252.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751873037; cv=none; b=bVKF+M9NU8KJRMooV0u00XAi4LPRTpH/2TXa39ns/qLwWkwpZj/1GbeXPuBd1fg/KR1kD8TNdyH2Pa2oTasdQGGu3+5IDp0hwmSP78QGdjPM5RcI+4GyU0Sif6VrgEHxY07RJ6A81P3m8ReJX9lHVNZcy/uOKTz8hOctBQb8Ql4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751873037; c=relaxed/simple; bh=vVY6bNBoR2kMJrILPjPUebf8haHIjqKvbb3MU8rQylM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QvqxxkgsxF9Pa2LYMxVDgj/jlqVKwQa0dKJ47VVL/BkTeemwlDCvUYyehh+qLaTwT56xiR602RDnZgGQFLlRU1uDN6blaTTH8CuUc3/bt2NlZslXUiKVEIN7H8h+8y22IChS+LZ9FiCxEgumAKnFJ5cxctd0XP2Z4ADSdjIxY7I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net; spf=pass smtp.mailfrom=yeah.net; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b=TmdpZtYx; arc=none smtp.client-ip=103.129.252.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=yeah.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=yeah.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=yeah.net header.i=@yeah.net header.b="TmdpZtYx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yeah.net; s=s110527; h=Date:From:To:Subject:Message-ID:MIME-Version: Content-Type; bh=4ng1wQtLHFug7kmO6H2Kb5UP1OF3WN7eVo9JKF8DKI8=; b=TmdpZtYxUI6+Dyd4c3TPrIw9Msyab+CBv2ECUfNf+/fvFrtmKMa9ubBnIKgUnH yMFRTHNAebhBcv2NFPfImyxFteMXGdJGQu2e1ODRiReKoNSQYM4CDQBBd90/OGte WU5zL6m5Ou6hECCCIP0XoaMB7D1ZdwkK//oUwVIylUnV0= Received: from dragon (unknown []) by gzsmtp3 (Coremail) with SMTP id M88vCgD3t5TDdWtov8w7AA--.42463S3; Mon, 07 Jul 2025 15:22:45 +0800 (CST) Date: Mon, 7 Jul 2025 15:22:43 +0800 From: Shawn Guo To: Adam Ford Cc: linux-arm-kernel@lists.infradead.org, aford@beaconembedded.com, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] arm64: dts: imx8mm-beacon: Fix HS400 USDHC clock speed Message-ID: References: <20250620213447.56392-1-aford173@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250620213447.56392-1-aford173@gmail.com> X-CM-TRANSID:M88vCgD3t5TDdWtov8w7AA--.42463S3 X-Coremail-Antispam: 1Uf129KBjDUn29KB7ZKAUJUUUU8529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UbIYCTnIWIevJa73UjIFyTuYvjxU0b18UUUUU X-CM-SenderInfo: pvkd40hjxrjqh1hdxhhqhw/1tbiCwWDZWhrVSl45gAAsJ On Fri, Jun 20, 2025 at 04:34:45PM -0500, Adam Ford wrote: > The reference manual for the i.MX8MM states the clock rate in > MMC mode is 1/2 of the input clock, therefore to properly run > at HS400 rates, the input clock must be 400MHz to operate at > 200MHz. Currently the clock is set to 200MHz which is half the > rate it should be, so the throughput is half of what it should be > for HS400 operation. > > Fixes: 593816fa2f35 ("arm64: dts: imx: Add Beacon i.MX8m-Mini development kit") > Signed-off-by: Adam Ford Applied both, thanks!