Hello, On Fri, Mar 2, 2012 at 6:17 PM, Orjan Friberg <of@xxxxxxxxxxxx> wrote: > When running the mtd_subpagetest I'm seeing more or less spurious ECC > corrections. I.e., one round may show 4 corrections and the next will show > 7, only some of which are the same as the previous 4. > > Are the ECC errors expected to be that volatile and frequent? > > > I've seen various discussions regarding the OMAP sub page support, as well > as problems with the GPMC prefetch engine. Disabling both made no > difference regarding this. I've also tried two different sets of NAND > timings (relaxed and optimized), with no difference. > > I'm using a Micron NAND that requires 4-bit ECC correction but I'm running > with only 1-bit (software) ECC. This is on an old kernel, 2.6.32. IIRC NAND in mainline was broken for very long time on OMAP3, I think it was only fixed in 2.6.39.1. -- Gražvydas -- 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
