[U-Boot] [PATCH 0/5] spi: Add Atmel QuadSPI driver

[Tudor.Ambarus at microchip.com]

From: Tudor Ambarus <tudor.ambarus at microchip.com>

Backport the driver from linux v5.1-rc5 and adapt it for u-boot.
Tested on sama5d2_xplained Rev B with mx25l25635e spi-nor flash.

=> sf probe 1:0
SF: Detected mx25l25635e with page size 256 Bytes, erase size 64 KiB, total 32 MiB
=> sf erase 0 100000
SF: 1048576 bytes @ 0x0 Erased: OK
=> mw.b 0x21000000 bc 100000
=> sf write 0x21000000 0 100000
device 0 offset 0x0, size 0x100000
SF: 1048576 bytes @ 0x0 Written: OK
=> sf read  0x21100000 0 100000
device 0 offset 0x0, size 0x100000
SF: 1048576 bytes @ 0x0 Read: OK
=> cmp.b 0x21000000 0x21100000 100000
Total of 1048576 byte(s) were the same

Tudor Ambarus (5):
  dt-bindings: spi: add bindings for Atmel QSPI driver
  spi: Add Atmel QuadSPI driver
  configs: sama5d2_xplained: enable SST and MACRONIX flashes
  ARM: dts: at91: sama5d2_xplained: use jedec,spi-nor compatible
  ARM: dts: at91: sama5d2_xplained: describe flash bus width

 arch/arm/dts/at91-sama5d2_xplained.dts         |   4 +-
 configs/sama5d2_xplained_mmc_defconfig         |   2 +
 doc/device-tree-bindings/spi/atmel-quadspi.txt |  37 ++
 drivers/spi/Kconfig                            |   7 +
 drivers/spi/Makefile                           |   1 +
 drivers/spi/atmel-quadspi.c                    | 535 +++++++++++++++++++++++++
 6 files changed, 585 insertions(+), 1 deletion(-)
 create mode 100644 doc/device-tree-bindings/spi/atmel-quadspi.txt
 create mode 100644 drivers/spi/atmel-quadspi.c

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2.9.5