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Date:   Tue, 5 Feb 2019 17:33:03 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <broonie@...nel.org>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <Nicolas.Ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <Ludovic.Desroches@...rochip.com>, <bbrezillon@...nel.org>,
        <Cyrille.Pitchen@...rochip.com>, <bugalski.piotr@...il.com>
CC:     <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-mtd@...ts.infradead.org>,
        <Tudor.Ambarus@...rochip.com>
Subject: [PATCH v6 00/13] spi: atmel-quadspi: introduce sam9x60 qspi
 controller

From: Tudor Ambarus <tudor.ambarus@...rochip.com>

Patches from 1 to 11 are minor fixes or cosmetics.
Patches 12 and 13 introduce the sam9x60 qspi controller.

sam9x60 qspi controller tested with sst26vf064b jedec,spi-nor flash.
Backward compatibility test done on sama5d2 qspi controller and
mx25l25635e jedec,spi-nor flash.

v6: patch 13/13: add a caps instance to the sama5d2 entry instead of
allowing caps to be NULL

v5:
- use WICR for sam9x60
- remove ops hooks and introduce caps->has_ricr
- get rid of the cfg struct
- group IO accesses together in atmel_qspi_set_cfg()

v4:
- s/smm/mr, init controller in serial memory mode by default
- drop local variables that kept aq->regs and &pdev->dev, the compiler
  should be smart enough to store them in a register
- introduce QSPI_IFR_TFRTYP_MEM
- add comment saying QSPI_IFR_APBTFRTYP_READ is defined in sam9x60
- s/sama5d2_qspi_modes/atmel_qspi_modes, modes are the same both
  controllers
- fix kernel doc header
- move comment in function body
- collect R-b tags

v3:
- update smm value when different.
- treat just regular spi transfers when introducing sam9x60 qspi IP.
  Mem transfers will be added together with dirmap support.
- reorganize the code and change ops functions pointers to avoid code
  duplication.
- rename aq->clk to aq->pclk to indicate that it's a peripheral clock.
- drop unused and NOP transfer macros.
- add Suggested-by tags, reword some commits.

v2:
- cache MR value,
- drop iomem wrappers,
- make "pclk" clock-name mandatory even for sama5d2,
- rework clock handling,
- reorder setting of register values in set_cfg() calls,
- collect R-b tags.

Tudor Ambarus (13):
  spi: atmel-quadspi: cache MR value to avoid a write access
  spi: atmel-quadspi: order header files inclusion alphabetically
  spi: atmel-quadspi: drop wrappers for iomem accesses
  spi: atmel-quadspi: fix naming scheme
  spi: atmel-quadspi: remove unnecessary cast
  spi: atmel-quadspi: return appropriate error code
  spi: atmel-quadspi: switch to SPDX license identifiers
  spi: atmel-quadspi: rework transfer macros
  dt-bindings: spi: atmel-quadspi: update example to new clock binding
  dt-bindings: spi: atmel-quadspi: make "pclk" mandatory
  spi: atmel-quadspi: add support for named peripheral clock
  dt-bindings: spi: atmel-quadspi: QuadSPI driver for Microchip SAM9X60
  spi: atmel-quadspi: add support for sam9x60 qspi controller

 .../devicetree/bindings/spi/atmel-quadspi.txt      |  12 +-
 drivers/spi/atmel-quadspi.c                        | 270 +++++++++++++--------
 2 files changed, 184 insertions(+), 98 deletions(-)

-- 
2.9.5

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