[PATCH 00/15] mtd: spi-nor-core: add xSPI Octal DTR support

[Pratyush Yadav]

Hi,

This series adds support for octal DTR flashes in the spi-nor framework,
and then adds hooks for the Cypress Semper flash which is an xSPI
compliant Octal DTR flash.

The Cadence QSPI controller driver is also updated to run in Octal DTR
mode.

Tested on TI J721e EVM with 1-bit ECC on the Cypress flash on top of
u-boot-ti/next.

This series depends on [0].

[0] cf. <20200224071051.19331-1-p.yadav at ti.com>
[0] https://lists.denx.de/pipermail/u-boot/2020-February/401192.html

Pratyush Yadav (15):
  dt-bindings: spi: allow expressing DTR capability
  spi: set mode bits for "spi-rx-dtr" and "spi-tx-dtr"
  spi: spi-mem: allow specifying whether an op is DTR or not
  spi: spi-mem: allow specifying a command's extension
  spi: cadence-qspi: Do not calibrate when device tree sets read delay
  spi: cadence-qspi: Add support for octal DTR flashes
  mtd: spi-nor-core: Add a ->setup() hook
  mtd: spi-nor-core: Move SFDP related declarations to top
  mtd: spi-nor-core: Introduce flash-specific fixup hooks
  mtd: spi-nor-core: Add support for DTR protocol
  mtd: spi-nor-core: Get command opcode extension type from BFPT
  mtd: spi-nor-core: Parse xSPI Profile 1.0 table
  mtd: spi-nor-core: Use Read SR dummy cycle and address width from SFDP
  mtd: spi-nor-core: Enable octal DTR mode when possible
  mtd: spi-nor-core: Add support for Cypress Semper flash

 doc/device-tree-bindings/spi/spi-bus.txt |   4 +
 drivers/mtd/spi/sf_internal.h            |   8 +
 drivers/mtd/spi/spi-nor-core.c           | 804 +++++++++++++++++------
 drivers/mtd/spi/spi-nor-ids.c            |   1 +
 drivers/mtd/spi/spi-nor-tiny.c           |  22 -
 drivers/spi/cadence_qspi.c               |  59 +-
 drivers/spi/cadence_qspi.h               |  15 +-
 drivers/spi/cadence_qspi_apb.c           | 255 ++++++-
 drivers/spi/spi-mem.c                    |  47 ++
 drivers/spi/spi-uclass.c                 |   9 +
 include/linux/mtd/spi-nor.h              | 223 +++++--
 include/spi-mem.h                        |  32 +
 include/spi.h                            |   2 +
 13 files changed, 1171 insertions(+), 310 deletions(-)

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2.25.0