Marvell HW overlay support for Cadence xSPI [LWN.net]

From:		Witold Sadowski <wsadowski-AT-marvell.com>
To:		<linux-kernel-AT-vger.kernel.org>, <linux-spi-AT-vger.kernel.org>, <devicetree-AT-vger.kernel.org>
Subject:		[PATCH v7 0/4] Marvell HW overlay support for Cadence xSPI
Date:		Wed, 29 May 2024 15:00:22 -0700
Message-ID:		<20240529220026.1644986-1-wsadowski@marvell.com>
Cc:		<broonie-AT-kernel.org>, <robh-AT-kernel.org>, <krzysztof.kozlowski+dt-AT-linaro.org>, <conor+dt-AT-kernel.org>, <pthombar-AT-cadence.com>, Witold Sadowski <wsadowski-AT-marvell.com>
Archive-link:		Article

This patch series adds support for the second version of the Marvell
hardware overlay for the Cadence xSPI IP block. The overlay is a hardware
change made around the original xSPI block. It extends xSPI features with
clock configuration, interrupt masking, and full-duplex, variable-length SPI
operations.

These functionalities allow the xSPI block to operate not only with memory
devices but also with simple SPI devices and TPM devices.

Changes:
v7:
  Rebase patches to latest sources, changes in "Allow to read basic xSPI configuration
 from ACPI"
  Removed bugfix, as it was integrated to next tree from v6

v6:
  Fix item order in cdns,xspi.yaml

v5:
  Rework cdns,xspi.yaml file
  Reword commit messages
  Move mamory mapping to ACPI patch
  Use devm_platform_ioremap_resource instead of two step mapping

v4:
  Rename new Marvell registers to keep naming conventions
  Rename mrvl,xspi-nor to marvell,cnxx,xspi-nor
  Various fixed for cdns,xspi.yaml file:
    - Remove unnecesary parameters
    - Link register xferbase with marvell,cn10-xspi-nor
    - Move default values to .c file from device-tree
  Clock configuration optimization
  ACPI fixes:
    - Remove incorrect ACPI match table
  Added .data field to device_id, fixes for matching in ACPI and dtb case
  Minor style comment changes

v3:
  Removed all kconfig changes
  Added device-tree mrvl,xspi-nor tag

v2:
  Support for second overlay iteration

v1:
  -

v0:
  Initial support for v1 overlay

Piyush Malgujar (1):
  spi: cadence: Allow to read basic xSPI configuration from ACPI

Witold Sadowski (3):
  spi: dt-bindings: cadence: Add Marvell overlay bindings documentation
    for Cadence XSPI
  spi: cadence: Add Marvell xSPI IP overlay changes
  spi: cadence: Add MRVL overlay xfer operation support

 .../devicetree/bindings/spi/cdns,xspi.yaml    |  32 +-
 drivers/spi/spi-cadence-xspi.c                | 598 +++++++++++++++++-
 2 files changed, 615 insertions(+), 15 deletions(-)

-- 
2.43.0