linux-kernel - Re: [PATCH 1/5] dt-bindings: Add Bao IPC shared memory driver binding

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Message-Id: <176659309602.2305345.1814998732546100865.robh@kernel.org>
Date: Wed, 24 Dec 2025 10:18:17 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: joaopeixoto@...x.tech
Cc: will@...nel.org, linux-kernel@...r.kernel.org, bagasdotme@...il.com, 
 maddy@...ux.ibm.com, krzk+dt@...nel.org, alex@...ti.fr, conor+dt@...nel.org, 
 haren@...ux.ibm.com, dan.j.williams@...el.com, jose@...x.tech, 
 prabhakar.mahadev-lad.rj@...renesas.com, 
 linux-arm-kernel@...ts.infradead.org, nathan@...nel.org, pjw@...nel.org, 
 linux-riscv@...ts.infradead.org, catalin.marinas@....com, heiko@...ech.de, 
 devicetree@...r.kernel.org, gregkh@...uxfoundation.org, dev@...l-k.io, 
 linux@...linux.org.uk, neil.armstrong@...aro.org, kever.yang@...k-chips.com, 
 corbet@....net, ajd@...ux.ibm.com, aou@...s.berkeley.edu, 
 davidmcerdeira@...x.tech, palmer@...belt.com, mani@...nel.org, 
 linux-doc@...r.kernel.org
Subject: Re: [PATCH 1/5] dt-bindings: Add Bao IPC shared memory driver
 binding


On Wed, 24 Dec 2025 13:52:13 +0000, joaopeixoto@...x.tech wrote:
> From: João Peixoto <joaopeixoto@...x.tech>
> 
> This patch adds a Device Tree binding for the Bao IPC shared memory
> device, which provides a standardized description of the hardware
> interface used for inter-VM communication in Bao-based systems.
> 
> The binding documents the following properties:
> 
>   - compatible: "bao,ipcshmem"
>   - reg: Memory region for the shared memory device
>   - id: Unique device identifier
>   - read-channel: [offset, size] for reading from the shared memory
>   - write-channel: [offset, size] for writing to the shared memory
>   - interrupts: Interrupts used by the device
> 
> This enables kernel drivers and userspace tools to correctly
> instantiate and configure Bao IPC shared memory devices based
> on the DT description, facilitating efficient communication
> between VMs.
> 
> Signed-off-by: João Peixoto <joaopeixoto@...x.tech>
> ---
>  .../devicetree/bindings/bao/ipcshmem.yaml     | 99 +++++++++++++++++++
>  .../devicetree/bindings/vendor-prefixes.yaml  |  2 +
>  2 files changed, 101 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/bao/ipcshmem.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:


doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20251224135217.25350-2-joaopeixoto@osyx.tech

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.