From mboxrd@z Thu Jan 1 00:00:00 1970 From: Przemyslaw Marczak Date: Tue, 10 Mar 2015 14:07:49 +0100 Subject: [U-Boot] "Writing to MMC(%d)... failed" In-Reply-To: References: <54F06E39.6090509@samsung.com> Message-ID: <54FEECA5.8000405@samsung.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello Nathan, On 03/10/2015 12:30 PM, Nathan wrote: > I hope my last message didn't get lost during that outage last month. > > In the mean time, I had to finagle the HardKernel code to work with > GCC 5.0 which ended up being only 1 line change which I may end up > encountering in mainline if I ever get far enough. > After transferring the "CONFIG_MMC_TRACE" to the HardKernel mmc.c, I > have a comparable output for the U2 with the "Samsung" mainline. > > So the output comparison can be made more readable, I created a Google > Drive Sheet, lining up the output when there were repeats, > highlighting the differing output sections and changing the text color > for the different values: > https://docs.google.com/spreadsheets/d/1Gu10bG8wGJClorJjKoIMiAt4HR0nS22ugrL8-F5_Nbg/edit?usp=sharing > Now, I don't have too much time for this, but the only one you need is the documentation and a time to analyze the responds for commands. Please check this site: https://www.sdcard.org/downloads/pls/simplified_specs/index.html you can also check some example spec from Jedec: http://www.jedec.org/standards-documents/results/jesd84-a441 You will solve this problem with this. By the way, did you tried another SD-Card? Best regards, -- Przemyslaw Marczak Samsung R&D Institute Poland Samsung Electronics p.marczak at samsung.com