net: pse-pd: realtek-pse-mcu: add I2C transport

Add the I2C/SMBus transport for the Realtek PSE MCU core. It registers
the MCU on an I2C bus and provides the send/recv callbacks the core
uses to exchange the 12-byte frames.

The MCU firmware expects one of two framings on the I2C bus, and which one
is part of the compatible: '-smbus' (reads carry a leading command byte
and a repeated start) or raw '-i2c' (bare block writes and reads). The
match data flags the raw-I2C case; SMBus is the default because that's
what the majority of devices uses.

Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20260813222036.873930-4-jelonek.jonas@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions