[PATCH v2 0/4] spi: Add support for Amlogic Meson SPIFC

Beniamino Galvani b.galvani at gmail.com
Mon Nov 17 14:47:47 PST 2014


this patchset adds a driver for the SPIFC (SPI flash controller)
available in Amlogic Meson6 and Meson8 SoCs. The driver has been
tested on a Meson8 based device to communicate with a Macronix
mx25l1606e serial flash.

The first patch adds a field to the spi_transfer structure that allows
the driver to know in transfer_one() whether the transfer is the last
one and change CS accordingly, without the need to reimplement

Changes since v1 [ https://lkml.org/lkml/2014/11/9/35 ]:
 - decrease busy wait timeout
 - remove check on xfer->speed_hz value in meson_spifc_transfer_one()
 - implement transfer_one() instead of transfer_one_message()
 - remove useless memset of devdata
 - use fixed regmap config
 - implement PM operations
 - don't set master->bus_num
 - allow modular build of the driver

Beniamino Galvani (4):
  spi: Add 'last' flag to spi_transfer structure
  spi: meson: Add device tree bindings documentation for SPIFC
  spi: meson: Add support for Amlogic Meson SPIFC
  ARM: dts: meson: add node for SPIFC

 .../devicetree/bindings/spi/spi-meson.txt          |  22 +
 arch/arm/boot/dts/meson.dtsi                       |   9 +
 drivers/spi/Kconfig                                |   7 +
 drivers/spi/Makefile                               |   1 +
 drivers/spi/spi-meson-spifc.c                      | 461 +++++++++++++++++++++
 drivers/spi/spi.c                                  |   6 +
 include/linux/spi/spi.h                            |   2 +
 7 files changed, 508 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-meson.txt
 create mode 100644 drivers/spi/spi-meson-spifc.c


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