From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnout Vandecappelle Date: Fri, 18 Sep 2015 00:36:53 +0200 Subject: [Buildroot] Olimex A20 Micro - freezing during boot up In-Reply-To: <55F9808D.1020809@kgolding.co.uk> References: <55F9808D.1020809@kgolding.co.uk> Message-ID: <55FB4085.4020107@mind.be> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net On 16-09-15 16:45, Kevin Golding wrote: > Hello, > > I've created a system based on the olimex_a20_olinuxino_micro_defconfig When you say "based on", do you mean "equal to"? If not, go back to the defconfig and check if that works. Don't hold your breath, though - see below. > and I'm > seeing it freeze at around 1.2 seconds during the boot up. > > I'm a little worried about some of the errors during the boot such as "Failed to > set core voltage! Can't set CPU frequency" This is potentially harmful. > "*** Warning - bad CRC, using default environment" This is quite harmless: U-Boot tries to read the environment from flash, but it's not there (yet) because you never saved it. > but as a complete newbie I'm not sure how important they are! > > I've copied the serial capture below, and I would love to get my hands of > someone's working equivalent to compare against, or any suggestions/advice? > > Thanks, > > Kevin > > --------------------------- Serial capture below ------------------------------- > > U-Boot SPL 2015.04 (Sep 16 2015 - 09:57:21) > DRAM: 1024 MiB > Failed to set core voltage! Can't set CPU frequency > > [snip] > [ 1.073035] axp20x 0-0034: AXP20x variant AXP209 found > [ 1.078689] axp20x 0-0034: Failed to set masks in 0x40: -6 > [ 1.084264] axp20x 0-0034: failed to add irq chip: -6 This looks potentially problematic. The AXP is the PMIC, i.e. the thing that regulates the voltages to your CPU. If that thing is not working correctly, things go very bad. > [ 1.092777] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, > nowayout=0) > [ 1.101056] Driver 'mmcblk' needs updating - please use bus_type methods > [ 1.108745] sunxi-mmc 1c0f000.mmc: No vqmmc regulator found > [ 1.114990] sunxi-mmc 1c0f000.mmc: Got CD GPIO > [ 1.150750] sunxi-mmc 1c0f000.mmc: base:0xf00b8000 irq:27 > [ 1.157146] sunxi-mmc 1c12000.mmc: No vqmmc regulator found > [ 1.163483] sunxi-mmc 1c12000.mmc: Got CD GPIO > [ 1.200758] sunxi-mmc 1c12000.mmc: base:0xf00bc000 irq:28 > [ 1.208924] usbcore: registered new interface driver usbhid > [ 1.214589] usbhid: USB HID core driver > [ 1.220243] TCP: cubic registered > [ 1.223677] NET: Registered protocol family 17 > [ 1.228168] mmc0: host does not support reading read-only switch, assuming > write-e It's even stopping in the middle of a printk... Smells to me like a hardware issue: insufficient current or possibly even overheating. Do you have another board to test? Regards, Arnout -- Arnout Vandecappelle arnout at mind be Senior Embedded Software Architect +32-16-286500 Essensium/Mind http://www.mind.be G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle GPG fingerprint: 7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF