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[109.252.90.13]) by smtp.gmail.com with ESMTPSA id v136-v6sm844984lfa.10.2018.07.28.03.13.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 28 Jul 2018 03:13:46 -0700 (PDT) From: Dmitry Osipenko To: Peter Geis Cc: Stefan Agner , Adrian Hunter , ulf.hansson@linaro.org, thierry.reding@gmail.com, jonathanh@nvidia.com, marcel.ziswiler@toradex.com, linux-mmc@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tegra-owner@vger.kernel.org Subject: Re: [PATCH 3/3] mmc: tegra: prevent ACMD23 on Tegra 3 Date: Sat, 28 Jul 2018 13:13:42 +0300 Message-ID: <7096174.4n8ysn5QrL@dimapc> In-Reply-To: References: <20180712073904.4705-1-stefan@agner.ch> <4098188.Bd2NGYzoJE@dimapc> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday, 27 July 2018 23:19:53 MSK Peter Geis wrote: > Kingston KE4CN3K6A. > Though I am pretty sure I've figured out the instability. > Brought it in to work and hooked it to a scope. > Couldn't find clock, but cmd and all eight bits are running at 1.2 volts. > Repeated the results with the bootloader, the original kernel, and my > mainline. > Also noticed that even on the slowest slew rate there is significant > ringing and overshoot of .15 volts. Okay, but eMMC is working fine with the original kernel, isn't it?