linux-kernel - [PATCH v3 0/2] mtd: spi-nor: add stm32 qspi driver

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Message-ID: <1492016785-24976-1-git-send-email-ludovic.Barre@st.com>
Date:   Wed, 12 Apr 2017 19:06:23 +0200
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Cyrille Pitchen <cyrille.pitchen@...el.com>,
        Marek Vasut <marek.vasut@...il.com>
CC:     David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Richard Weinberger <richard@....at>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v3 0/2] mtd: spi-nor: add stm32 qspi driver

From: Ludovic Barre <ludovic.barre@...com>

This patch set adds a SPI-NOR driver for stm32 QSPI controller.
It is a specialized SPI interface for serial Flash devices.
It supports 1 or 2 Flash device with single, dual and quad SPI Flash memories.

It can operate in any of the following modes:
-indirect mode: all the operations are performed using the quadspi
  registers
-read memory-mapped mode: the external Flash memory is mapped to the
  microcontroller address space and is seen by the system as if it was
  an internal memory

Changes in v3:
-dt-bindings: qspi_mm not optional
-dt-bindings: see ../spi/spi-bus.txt
-dt-bindings: spi@...
-cmd flat struct
-ratelimit
-macro to avoid hard value "25"

Changes in v2:
-awful construct: s/u32/u8
-add define for timeout
-Use a helper variable
-add comment on "stm32 qspi controller fsize issue

Ludovic Barre (2):
  dt-bindings: Document the STM32 QSPI bindings
  mtd: spi-nor: add driver for STM32 quad spi flash controller

 .../devicetree/bindings/mtd/stm32-quadspi.txt      |  43 ++
 drivers/mtd/spi-nor/Kconfig                        |   7 +
 drivers/mtd/spi-nor/Makefile                       |   1 +
 drivers/mtd/spi-nor/stm32-quadspi.c                | 693 +++++++++++++++++++++
 4 files changed, 744 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/stm32-quadspi.txt
 create mode 100644 drivers/mtd/spi-nor/stm32-quadspi.c

-- 
2.7.4