[U-Boot] [PATCH v2 0/4] sf: Add nr_flash support

[Jagannadha Sutradharudu Teki]

This is next version patch series for -
http://u-boot.10912.n7.nabble.com/PATCH-0-5-sf-Add-support-to-access-dual-flash-memory-td160223.html

"nr_flash" support look likes how many no.of flashes can be connected
to a controller from a given chipselect. Usually from every controller
we can connect single flash with a single chipselect line and current
sf framework support too. but there are some hw logics(ex: xilinx zynq qspi)
describes two/dual memories are connected with a single chipselect line from
a controller.

This code nothing harm to existing sf with single flash as newly added
code is moved onto CONFIG_SF_NR_FLASH config option.

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
--
Thanks,
Jagan.

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_NR_FLASH

 README                     |  6 +++
 doc/SPI/README.nr-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.nr-flash

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1.8.3