On Wed, Oct 23, 2019 at 10:49 AM Vignesh Raghavendra <vigne...@ti.com> wrote: > > Hi Jagan, > > On 23/10/19 12:00 AM, Jagan Teki wrote: > > Hi Vignesh, > > > > On Fri, Oct 11, 2019 at 1:28 PM Vignesh Raghavendra <vigne...@ti.com> wrote: > >> > >> n25q* and mt25q* (both 256Mb and 512Mb) flashes support Flag status > >> register that indicates various errors that may be encountered during > >> erase/write operations. Therefore add USE_FSR flag wherever missing. > > > > Does 256Mb require FSR? I remember Micron die is created after 512Mb > > where it creates die between two 256Mb on 512Mb flash. Indeed die > > switching would require FSR. > > > > Flag Status Register(FSR) is not for switching die but for looking up and > printing out reason for write/erase failure. And yes 256Mb part does > support FSR. See datasheet at: > https://www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/n25q/n25q_256mb_1_8v.pdf > Table 17: Flag Status Register Bit Definition > > https://www.mouser.com/datasheet/2/671/MT25Q_QLJS_U_256_ABA_0-1387271.pdf > Table 5: Flag Status Register
Yes, I have seen these. I remember it wasn't require FSR when I did a test on zynq qspi last time. may be it can't consistent between all IP's _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot