[U-Boot] [PATCH v2 00/16] sf: Update sf framework to support all sizes of flashes

[Jagannadha Sutradharudu Teki]

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