Please ignore this patch series.

Regards,
Parshuram Thombare

-----Original Message-----
From: Parshuram Thombare <redacted>
Sent: Sunday, September 19, 2021 1:09 PM
To: broonie@kernel.org; lukas@wunner.de; p.yadav@ti.com;
robh+dt@kernel.org
Cc: linux-spi@vger.kernel.org; devicetree@vger.kernel.org; linux-
kernel@vger.kernel.org; Jayshri Dajiram Pawar [off-list ref]; Milind
Parab [off-list ref]; Parshuram Raju Thombare
[off-list ref]
Subject: [PATCH v6 0/2] add support for Cadence's XSPI controller

This patch series adds support for Cadence's XSPI controller.
It supports 3 work modes.
1. ACMD (auto command) work mode
   ACMD name is because it uses auto command engine in the controller.
   It further has 2 modes PIO and CDMA (command DMA).
   The CDMA work mode is dedicated for high-performance application
   where very low software overhead is required. In this mode the
   Command Engine is programmed by the series of linked descriptors
   stored in system memory. These descriptors provide commands to execute
   and store status information for finished commands.
   The PIO mode work mode is dedicated for single operation where
   constructing a linked list of descriptors would require too
   much effort.
2. STIG (Software Triggered Instruction Generator) work mode
   In STIG mode, controller sends low-level instructions to memory.
   Each instruction is 128-bit width. There is special instruction
   DataSequence which carries information about data phase.
   Driver uses Slave DMA interface to transfer data as only this
   interface can be used in STIG work mode.
3. Direct work mode
   This work mode allows sending data without invoking any command through
   the slave interface.
Currently only STIG work mode is enabled, remaining work modes will
be added later.

Changes since v5:
1. Added adjust_op_size to adjust op size according to sdma size.

Changes since v4:
1. Changed reg region names and lengths as suggested by Rob.

Changes since v3:
1. Removed ACMD PIO mode.
2. Return IRQ_HANDLED only for handled interrupts.
3. DT binding changes.

Changes since v2:
1. Removed extra lock around exec_op.
2. Removed PHY parameters setting from the driver, those will be
  handled by bootstrap pins available in the controller.

Changes since v1:
1. Use ACMD PIO work mode for NOR read, program and erase operations,
  for everything else use STIG(Software Triggered Instruction
  Generator) work mode.
2. Changes suggested by Lukas.

Parshuram Thombare (2):
 spi: cadence: add dt-bindings documentation for Cadence XSPI
   controller
 spi: cadence: add support for Cadence XSPI controller

.../devicetree/bindings/spi/cdns,xspi.yaml         |  77 +++
drivers/spi/Kconfig                                |  12 +
drivers/spi/Makefile                               |   1 +
drivers/spi/spi-cadence-xspi.c                     | 639 +++++++++++++++++++++
4 files changed, 729 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/cdns,xspi.yaml
create mode 100644 drivers/spi/spi-cadence-xspi.c

--
2.7.4