[PATCH 0/6] spi: Add Renesas SPIBSC controller

[Chris Brandt <chris.brandt@xxxxxxxxxxx>]

The Renesas SPI Bus Space Controller (SPIBSC) HW was specifically designed for
accessing SPI flash devices. In the hardware manuals, it is almost always
labeled as the "Renesas SPI Multi I/O Bus Controller". However, the HW IP is
usually referred to within Renesas as the "SPIBSC" block.

This driver has been tested on an RZ/A1H RSK and RZ/A2M EVB.

The testing mostly consisted of formatting an area as JFFS2 and doing copying
of files and such.

While the HW changed a little between the RZ/A1 and RZ/A2 generations, the IP
block in the RZ/A2M was taken from the R-Car H3 design, so in theory this
driver should work for R-Car Gen3 as well.



Chris Brandt (6):
  clk: renesas: mstp: Add critical clock from device tree support
  ARM: dts: r7s72100: Add SPIBSC clocks
  clk: renesas: r7s9210: Add SPIBSC clock
  spi: Add SPIBSC driver
  ARM: dts: r7s9210: Add SPIBSC Device support
  dt-bindings: spi: Document Renesas SPIBSC bindings

 .../bindings/spi/spi-renesas-spibsc.txt       |  48 ++
 arch/arm/boot/dts/r7s72100.dtsi               |  26 +-
 arch/arm/boot/dts/r7s9210.dtsi                |  10 +
 drivers/clk/renesas/clk-mstp.c                |  16 +-
 drivers/clk/renesas/r7s9210-cpg-mssr.c        |   9 +
 drivers/spi/Kconfig                           |   8 +
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-spibsc.c                      | 609 ++++++++++++++++++
 8 files changed, 719 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt
 create mode 100644 drivers/spi/spi-spibsc.c

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2.23.0