This builds on top of my in-flight series that adds the syscon node for the
switch block[1]. The I2C controllers are part of that block of registers. The
controller driver is adapted from openwrt. From v2 of this series I've taken
the approach suggested by Rob and represented the SDA lines as child nodes. I
expect there will be a bit of discussion around the naming of the controller
nodes (in the Realtek documentation they are referred to as I2C_MST1 and
I2C_MST2).

[1] - https://lore.kernel.org/lkml/20240923225719.2999821-1-chris.packham@alliedtelesis.co.nz/

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2.46.1

Chris Packham (3):
  dt-bindings: i2c: Add RTL9300 I2C controller
  i2c: Add driver for the RTL9300 I2C controller
  mips: dts: realtek: Add I2C controllers

 .../bindings/i2c/realtek,rtl9300-i2c.yaml     |  80 ++++
 MAINTAINERS                                   |   7 +
 arch/mips/boot/dts/realtek/rtl930x.dtsi       |  18 +
 drivers/i2c/busses/Kconfig                    |  10 +
 drivers/i2c/busses/Makefile                   |   1 +
 drivers/i2c/busses/i2c-rtl9300.c              | 421 ++++++++++++++++++
 6 files changed, 537 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/realtek,rtl9300-i2c.yaml
 create mode 100644 drivers/i2c/busses/i2c-rtl9300.c

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2.46.1