This patch set adds support for the GPIO controllers on the QIXIS FPGAs
found on some Layerscape boards such as LX2160ARDB and LS1046AQDS.

The first patch adds the necessary dt-binding for the new GPIO
controller driver. The filename of the new dt-binding was chosen as the
common part between all the compatible strings added.

The next two patches extend the fsl,fpga-qixis-i2c dt-binding and the
simple-mfd-i2c driver so that the LX2160ARDB FPGA is also probed by said
driver.

Patches 3/9 and 4/9 extend gpio-regmap and add the actual new GPIO
driver for these fixed direction GPIO controllers.

The last 4 patches extend the device-tree for the LX2160ARDB and
LS1046AQDS boards by describing the QIXIS FPGAs, when necessary, adding
the GPIO controller nodes and also using said GPIO lines to describe the
on-board SFP cages.

This patch set depends on the following in-flight patch:
 https://lore.kernel.org/all/20250707153120.1371719-1-ioana.ciornei@nxp.com/

Ioana Ciornei (9):
  dt-bindings: gpio: add bindings for the QIXIS FPGA based GPIO
    controller
  dt-bindings: fsl,fpga-qixis-i2c: extend support to also cover the
    LX2160ARDB FPGA
  mfd: simple-mfd-i2c: add compatible string for LX2160ARDB
  gpio: regmap: add the .get_direction() callback
  drivers: gpio: add QIXIS FPGA GPIO controller
  arm64: dts: lx2160a-rdb: describe the QIXIS FPGA and two child GPIO
    controllers
  arm64: dts: ls1046a-qds: describe the FPGA based GPIO controller
  arm64: dts: lx2160a-rdb: fully describe the two SFP+ cages
  arm64: dts: ls1046a-qds: describe the two on-board SFP+ cages

 .../bindings/board/fsl,fpga-qixis-i2c.yaml    |  35 +++++
 .../bindings/gpio/fsl,fpga-gpio.yaml          |  44 ++++++
 .../boot/dts/freescale/fsl-ls1046a-qds.dts    |  52 +++++++
 .../boot/dts/freescale/fsl-lx2160a-rdb.dts    |  76 ++++++++++
 drivers/gpio/Kconfig                          |   9 ++
 drivers/gpio/Makefile                         |   1 +
 drivers/gpio/gpio-qixis-fpga.c                | 141 ++++++++++++++++++
 drivers/gpio/gpio-regmap.c                    |  17 ++-
 drivers/mfd/simple-mfd-i2c.c                  |   1 +
 include/linux/gpio/regmap.h                   |   3 +
 10 files changed, 378 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/fsl,fpga-gpio.yaml
 create mode 100644 drivers/gpio/gpio-qixis-fpga.c

-- 
2.25.1