From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Wed, 17 Jun 2015 12:43:05 +0200 Subject: [U-Boot] Very slow fatload on bcm2835 In-Reply-To: <557FEA0F.9050303@suse.cz> References: <20150611203514.2f83d4b3@north> <557F9FAE.3040602@wwwdotorg.org> <557FEA0F.9050303@suse.cz> Message-ID: <201506171243.05720.marex@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tuesday, June 16, 2015 at 11:19:11 AM, Michal Marek wrote: > On 2015-06-16 06:01, Stephen Warren wrote: > > On 06/11/2015 12:35 PM, Jakub Kicinski wrote: > >> Hello! Hi/Ahoj :) > >> I'm using latest git source of U-Boot on Raspberry Pi Compute Module > >> and performance of fatload is quite bad. Does anyone have any clue > >> about what can be wrong? Is it the lack of cache? > > > >> Sample boot log: > > ... > > > >> reading zImage > >> 4003816 bytes read in 48930 ms (79.1 KiB/s) > > > > I see this too. I bisected it to: > > 33fe2fb8df01 ARM: mmc: bcm283x: Remove get_timer_us() from mmc driver > > > > Marek, this is the second symptom I bisected to this patch. Something > > seems quite wrong with it. Did changing to the other timer function > > change the timer tick rate or something? FWIW, "sleep 10" at the shell > > prompt appears to run for the correct amount of time, so I guess it's > > not that. Hmmmm, get_timer() returns msecs, not usecs. I wonder what I was smoking. Can you try with the attached diff please (I only compile-tested it) ? > I think you meant Marek Va?ut. I'm Marek by last name :). We're both Czech though ;-) Best regards, Marek Vasut -------------- next part -------------- A non-text attachment was scrubbed... Name: sdmmc.diff Type: text/x-patch Size: 706 bytes Desc: not available URL: