[v5,0/3] spi: support for Socionext Synquacer platform

Message

Masahisa Kojima May 21, 2019, 11:59 a.m. UTC

Hello,

 Support for Socionext's FIP controller intended for flash device interfacing.
The controller can operate in 'direct' or 'command' mode. One mode directly
talks and provide a read/write i/f to the flash device. Other works as plain
SPI mode. This driver runs the controller as a SPI controller.

I took over this driver update from Jassi.
Although more than a year has passed from previous version,
it would be great if you could review this patch series.

Changes since v4:
        # Supported interrupt based data handling instead of polling
        # Added prefix "SYNQUACER_HSSPI_"
        # Replaced data read/write access with readsx()/writesx()
        # Updated clock source handling, explicitly specify "iHCLK" or "iPCKL"
          and removed array of clk

Changes since v3:
        # Convert IS_ERR returned from devm_clk_get(iPCLK) to NULL, that way
          we can call clk_xxx(IPCLK) without first checking for it being valid.

Changes since v2:
        # Made iHCLK clock property required in DT, and iPCLK an optional extra.
        # Hardcode max number of slaves to 4, as specified in the manual.

Changes since v1:
        # Changed licence header to C++ style comment.
        # Removed redundant lock and transfer_mode backup member.
        # Fixed divisor to allow upto 254.

Masahisa Kojima (3):
  MAINTAINERS: Add entry for Synquacer SPI driver
  dt-bindings: spi: Add DT bindings for Synquacer
  spi: Add spi driver for Socionext Synquacer platform

 .../devicetree/bindings/spi/spi-synquacer.txt      |  27 +
 MAINTAINERS                                        |   8 +
 drivers/spi/Kconfig                                |  11 +
 drivers/spi/Makefile                               |   1 +
 drivers/spi/spi-synquacer.c                        | 731 +++++++++++++++++++++
 5 files changed, 778 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-synquacer.txt
 create mode 100644 drivers/spi/spi-synquacer.c