[PATCH v1 0/2] spi: add NPCM FIU controller driver

From: Tomer Maimon
Date: Thu Aug 01 2019 - 10:05:20 EST


This patch set adds Flash Interface Unit(FIU) SPI
master support for the Nuvoton NPCM Baseboard
Management Controller (BMC).

The FIU supports single, dual or quad communication interface.

the FIU controller can operate in following modes:
- User Mode Access(UMA): provides flash access by using an
indirect address/data mechanism.
- direct rd/wr mode: maps the flash memory into the core
address space.
- SPI-X mode: used for an expansion bus to an ASIC or CPLD.

The NPCM750/730/715/710 supports up to three FIU devices:
- FIU0 supports two chip select.
- FIU3 supports four chip select.
- FIUX supports two chip select.

The NPCM FIU driver tested on NPCM750 evaluation board.

The FIU controller driver using direct map API SPI-MEM
interface and tested with the latest m25p80 driver patch
https://www.spinics.net/lists/linux-mtd/msg07358.html

According a conversion about direct SPI-MEM API
https://www.spinics.net/lists/linux-mtd/msg08225.html

The m25p80 driver will merge to the spi-nor driver we
need to make sure the m25p80 direct SPI-MEM will merge
as well.

Tomer Maimon (2):
dt-binding: spi: add NPCM FIU controller
spi: npcm-fiu: add NPCM FIU controller driver

.../bindings/spi/nuvoton,npcm-fiu.txt | 47 ++
drivers/spi/Kconfig | 10 +
drivers/spi/Makefile | 1 +
drivers/spi/spi-npcm-fiu.c | 760 ++++++++++++++++++
4 files changed, 818 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.txt
create mode 100644 drivers/spi/spi-npcm-fiu.c

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2.18.0