Javier Martinez Canillas a écrit : > On Fri, Oct 28, 2011 at 12:30 PM, Matthieu CASTET > <matthieu.castet@xxxxxxxxxx> wrote: >> PS : note that some OMAP ROM support a better protection than Hamming (but the >> details are not public AFAIK) >> >> From OMAP34xx Multimedia Device, Silicon Revision 3.1.x, public version : >> >> Pages can contain errors caused by memory alteration. To correct these errors, >> the ROM code uses ECC, >> based on Hamming codes for SLC NAND and BCH (Bose, Ray-Chaudhuri, Hocquenghem) >> code for >> multilevel cell (MLC) devices. The computed ECC is compared to ECC stored in the >> spare area of the >> corresponding page. If there are uncorrectable errors, the ROM code returns with >> FAIL. >> > > Yes I've read that on the DM3730 TRM but as far as I understand only > applies to MLC devices, but ours is SLC. > It also works on SLC devices. We are using it on micron slc that need 4 bits ECC. Matthieu -- 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
