| From: |
| Chris Brandt <chris.brandt-AT-renesas.com> |
| To: |
| Mark Brown <broonie-AT-kernel.org>, Rob Herring <robh+dt-AT-kernel.org>, "Mark Rutland" <mark.rutland-AT-arm.com>, Geert Uytterhoeven <geert+renesas-AT-glider.be>, Michael Turquette <mturquette-AT-baylibre.com>, Stephen Boyd <sboyd-AT-kernel.org> |
| Subject: |
| [PATCH 0/6] spi: Add Renesas SPIBSC controller |
| Date: |
| Mon, 2 Dec 2019 22:45:13 -0500 |
| Message-ID: |
| <20191203034519.5640-1-chris.brandt@renesas.com> |
| Cc: |
| <linux-spi-AT-vger.kernel.org>, <devicetree-AT-vger.kernel.org>, <linux-renesas-soc-AT-vger.kernel.org>, <linux-clk-AT-vger.kernel.org>, Mason Yang <masonccyang-AT-mxic.com.tw>, Sergei Shtylyov <sergei.shtylyov-AT-cogentembedded.com>, Chris Brandt <chris.brandt-AT-renesas.com> |
| Archive-link: |
| Article |
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
--
2.23.0
