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Miller" , Eric Dumazet , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tzu-Hao Wei , Karthikeyan Mitran , Jeremy Kerr , Matt Johnston , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org Subject: Re: [PATCH net-next 0/2] net: mctp: Add MCTP transport for the Axiado AX3005 IRoT Message-ID: <20261105154047.079c5eae@kernel.org> In-Reply-To: <20261101-mctp-transport-irot-ax3005-v1-0-36ceb822f01e@axiado.com> References: <20261101-mctp-transport-irot-ax3005-v1-0-36ceb822f01e@axiado.com> X-Mailing-List: openbmc@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , Precedence: list X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Sun, 01 Nov 2026 06:00:56 -0800 Akhila Kavi wrote: > 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. net-next was still closed when you posted this. It only opened after: https://lore.kernel.org/all/66b35989-9195-4e96-99bb-df383a52aa5d@redhat.com/