On Fri, Aug 9, 2013 at 11:46 AM, Marek Vasut <marex@xxxxxxx> wrote: > Dear Brian Norris, > >> For SPI NOR flash that are larger than 128Mbit (16MiB), we need 4 bytes >> of address space to reach the entire flash; however, the original SPI >> flash protocol used only 3 bytes for the address. So far, the practice >> for handling this has been either to use new command opcodes that are >> defined to use 4 bytes for their address, or to use special >> mode-switching command to configure all traditionally-3-byte-address >> commands to take 4 bytes instead. [snip long description of a mess] > The situation with the 4b addressing is a horrible mess :( Agreed. It took me a while to figure out that this was the root of my problems last week. > Acked-by: Marek Vasut <marex@xxxxxxx> Thanks. Brian -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html