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

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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>

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This commit is contained in:

Jonas Jelonek 2026-08-13 22:20:34 +00:00 • committed by Paolo Abeni

parent 44566e614d

commit 4c088d9eb3

3 changed files with 160 additions and 0 deletions

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11

drivers/net/pse-pd/Kconfig

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1

drivers/net/pse-pd/Makefile

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148

drivers/net/pse-pd/realtek-pse-mcu-i2c.c

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