[PATCH net-next 0/2] net: mctp: Add MCTP transport for the Axiado AX3005 IRoT

[Akhila Kavi]

The Axiado AX3005 SoC has an integrated root-of-trust (IRoT)
co-processor next to the application processor. Security protocols such
as SPDM and PLDM run between the two over MCTP. This series adds a
transport for that link, so the host side uses ordinary AF_MCTP
sockets.

The link is built from two channels of the AX3005 mailbox controller,
which is already supported (drivers/mailbox/axiado-mailbox.c, in the
base of this series), and a no-map reserved-memory carve-out. The
mailbox carries small doorbell and ACK messages. The packets
themselves go through two windows in the carve-out, one per direction,
which the IRoT firmware allocates and reports at probe time. Each
direction has one packet in flight, and every packet is acknowledged
with a counter.

Patch 1 adds the devicetree binding and a MAINTAINERS entry.
Patch 2 adds the driver.

This is v1; there are no earlier revisions.

To: Sammai Chakravarthy <schakravarthy@xxxxxxxxxx>
To: Prasad Bolisetty <pbolisetty@xxxxxxxxxx>
To: Andrew Lunn <andrew+netdev@xxxxxxx>
To: "David S. Miller" <davem@xxxxxxxxxxxxx>
To: Eric Dumazet <edumazet@xxxxxxxxxx>
To: Jakub Kicinski <kuba@xxxxxxxxxx>
To: Paolo Abeni <pabeni@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Tzu-Hao Wei <twei@xxxxxxxxxx>
To: Karthikeyan Mitran <kmitran@xxxxxxxxxx>
To: Jeremy Kerr <jk@xxxxxxxxxxxxxxxxxxxx>
To: Matt Johnston <matt@xxxxxxxxxxxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: openbmc@xxxxxxxxxxxxxxxx

Signed-off-by: Akhila Kavi <akavi@xxxxxxxxxx>
---
Akhila Kavi (2):
      dt-bindings: net: Add Axiado AX3005 IRoT MCTP transport
      net: mctp: Add Axiado AX3005 IRoT MCTP transport driver

 .../bindings/net/axiado,ax3005-mctp-irot.yaml      |   60 ++
 MAINTAINERS                                        |    9 +
 drivers/net/mctp/Kconfig                           |   17 +
 drivers/net/mctp/Makefile                          |    1 +
 drivers/net/mctp/axiado-mctp-irot.c                | 1089 ++++++++++++++++++++
 5 files changed, 1176 insertions(+)
---
base-commit: aeb76c8f39892c095cf9abcdc90e11627d131935
change-id: 20261026-mctp-transport-irot-ax3005-f0e061cbbd42

Best regards,
--  
Akhila Kavi <akavi@xxxxxxxxxx>