[U-Boot] [PATCH v3 0/4] sf: Add support to access dual flash memory

[Jagannadha Sutradharudu Teki]

This patchset adds support for dual flash memory accessing with single
chipselect line from the controller.

dual flash memory support is implemented in xilinx zynq qspi controllers
in which dual stacked and dual parallel are the connection modes. 

--
Thanks,
Jagan.

Changes for v3:
	- renamed nr_flash into dual_flash along with macro names
Changes for v2:
        - rebase to current spi tree
        - "option" variable on spi_slave so-that controller driver can specify which they use
        - Unify common code

Jagannadha Sutradharudu Teki (4):
  sf: ops: Unify read_ops bank configuration
  sf: Add dual memories support - DUAL_STACKED
  sf: Add dual memories support - DUAL_PARALLEL
  sf: Add CONFIG_SF_DUAL_FLASH

 README                     |  6 +++
 doc/SPI/README.dual-flash  | 92 ++++++++++++++++++++++++++++++++++++++++++++++
 drivers/mtd/spi/sf.c       |  4 ++
 drivers/mtd/spi/sf_ops.c   | 80 +++++++++++++++++++++++++++++++---------
 drivers/mtd/spi/sf_probe.c | 21 ++++++++---
 include/spi.h              |  9 +++++
 include/spi_flash.h        | 11 ++++++
 7 files changed, 199 insertions(+), 24 deletions(-)
 create mode 100644 doc/SPI/README.dual-flash

-- 
1.8.3