Request for comments. -- Thanks, Jagan.
On Fri, May 31, 2013 at 6:22 PM, Jagannadha Sutradharudu Teki <[email protected]> wrote: > This series is v2 for the patch series sent few weeks back with a head > "sf: Accessing > 16MBytes flashes in existing 3-byte addr mode." > > The current implementation in sf supports 3-byte address mode due > to this up to 16MB amount of flash is able to access for those > flashes which has an actual size of > 16MB. > > This series of patches is more detailed/meatured changes w.r.t the current > sf framework in addition to changes related to support all sizes using > bank/exnt register addr accessing support. > > With these new updates on sf framework, the flashes which has < 16MB > are not effected as per as performance is concern and but the > u-boot.bin size incrased ~600 bytes. > > sf update(for first 16MBytes), Changes before: > U-Boot> sf update 0x1000000 0x0 0x1000000 > - N25Q256 > 16777216 bytes written, 0 bytes skipped in 199.72s, speed 86480 B/s > - W25Q128BV > 16777216 bytes written, 0 bytes skipped in 351.739s, speed 48913 B/s > - S25FL256S_64K > 16777216 bytes written, 0 bytes skipped in 65.659s, speed 262144 B/s > > sf update(for first 16MBytes), Changes after: > U-Boot> sf update 0x1000000 0x0 0x1000000 > - N25Q256 > 16777216 bytes written, 0 bytes skipped in 198.953s, speed 86480 B/s > - W25Q128BV > 16777216 bytes written, 0 bytes skipped in 350.90s, speed 49200 B/s > - S25FL256S_64K > 16777216 bytes written, 0 bytes skipped in 66.521s, speed 262144 B/s > > The main aim of these changes is to not effect the current framework > and at the same time to support the > 16Mbyte flashes, becuase of this > I involved few flash vendor people in CC [thought that they may/mayn't > be a mailing list members] to know their views. > > REQUEST FOR ALL SPI CODE CONTRIBUTORS/USERS, PLEASE TEST > THESE CHANGES W.R.T YOUR HW IF POSSIBLE. > > Please let me know for any issues/concerns/questions. > > Thanks, > Jagan. > > Jagannadha Sutradharudu Teki (16): > sf: Add bank address register writing support > sf: Add bank address register reading support > sf: Add extended addr write support for winbond|stmicro > sf: Add extended addr read support for winbond|stmicro > sf: read flash bank addr register at probe time > sf: Update sf to support all sizes of flashes > sf: Update sf read to support all sizes of flashes > sf: Use spi_flash_addr() in write call > sf: stmicro: Add support for N25Q512 > sf: stmicro: Add support for N25Q512A > sf: stmicro: Add support for N25Q1024 > sf: stmicro: Add support for N25Q1024A > sf: spansion: Add support for S25FL512S_256K > sf: Use spi_flash_read_common() in write status poll > sf: Remove spi_flash_cmd_poll_bit() > sf: Add Flag status register polling support > > drivers/mtd/spi/spansion.c | 7 ++ > drivers/mtd/spi/spi_flash.c | 192 > +++++++++++++++++++++++++++-------- > drivers/mtd/spi/spi_flash_internal.h | 21 +++- > drivers/mtd/spi/stmicro.c | 24 +++++ > include/spi_flash.h | 4 + > 5 files changed, 203 insertions(+), 45 deletions(-) > > -- > 1.8.3 > > _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
