On Thu, Jan 26, 2012 at 11:13 AM, Andre Puschmann <andre.puschmann@xxxxxxxxxxxxx> wrote: > On 01/25/2012 11:15 PM, Frank Agius wrote: >> On 12/10/2011 8:55 AM, Andre Puschmann wrote: >>> Hi list, Steve, >>> >>> I am trying to boot a kernel I built (using omap2plus_defconfig) based >>> on Steve's omap-3.2 branch without much success. >>> >>> I don't get any console output after Uboot finished uncompressing the >>> kernel. Is there anything I need to configure? The kernel image based on >>> Tony's tree boots fine on the same hardware (Gumstix Overo Tide) >>> (despite having MMC issues as mentioned earlier). >> >> I ran into the same problem you described. Steve's tree has some patches >> that are not in mainline 3.2. I tracked the hang down to one of those >> patches that added support for 720Mhz capable hardware. The >> kernel reads the status register and determines that the CPU can support >> 720Mhz (omap3_check_features). From what I can tell, the check is done >> correctly (variable status in omap3_check_features is set to 0x08, which >> looks like the right bit for 720Mhz support). Since the kernel thinks >> that 720Mhz is supported, it calls omap3_opp_enable_720Mhz (file >> opp3xx_data.c). The kernel dies silently when it calls the opp enable >> for 720Mhz, at or near line 178: >> >> 176 pdev = &oh_mpu->od->pdev; >> 177 >> 178 r = opp_enable(&pdev->dev, 720000000); >> >> That's as far as I can take the debug. I'm going to disable the check >> for 720Mhz in my local tree until this can get sorted out. > Could this be related to same problem? : http://marc.info/?l=linux-omap&m=132756359017621&w=2 > Just wanted to mention that the bug is still present here, too. > Interestingly, the same code seems to work in the omap-3.0pm tree and > the kernel boots fine. So disabling 720MHz support might just hide the > real cause. > > -Andre > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html marek -- as simple and primitive as possible ------------------------------------------------- Marek Belisko - OPEN-NANDRA Freelance Developer Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
