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Subject[PATCH 0/2 v6] Lattice MachXO2 Slave SPI FPGA Manager support
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Hi all,
this series adds support for the Lattice MachXO2 FPGA chip, programmed
over Slave SPI.

Tested on a raspberry pi3, beaglebone black (little endian mode) and imx6
hummingboard (big endian mode) + bugblat's pif2 fpga hat (machxo2 7000HC) or
tinyfpga A1/A2 (machxo2 256HC / 1200HC), in SPI slave mode with varying bus
speed.

Changes since v5:
* fixed all the endianess issues
* introduced a cleanup() path invoked in case of flash failure
* moved back machxo2_write() to use a spi_sync() transaction per line write
(in v5 i queued all the spi_write()s and executed a single spi_sync() at the
end, but that, sometimes, resulted in the REFRESH command to fail with a
CMD_ERR, depending on the SPI bus speed)


Paolo Pisati (2):
dt: bindings: fpga: add lattice machxo2 slave spi binding description
fpga: lattice machxo2: Add Lattice MachXO2 support

.../bindings/fpga/lattice-machxo2-spi.txt | 29 ++
drivers/fpga/Kconfig | 8 +
drivers/fpga/Makefile | 1 +
drivers/fpga/machxo2-spi.c | 410 +++++++++++++++++++++
4 files changed, 448 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt
create mode 100644 drivers/fpga/machxo2-spi.c

--
2.7.4

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