Re: [net-next v1] dt-bindings: can: mpfs: document resets
From: Rob Herring (Arm)
Date: Mon Nov 17 2025 - 13:28:01 EST
On Mon, 17 Nov 2025 16:38:18 +0000, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
>
> The CAN cores on Polarfire SoC both have a reset. The platform firmware
> brings both cores out of reset, but the linux driver must use them
> during normal operation. The resets should have been made required, but
> this is one of the things that can happen when the binding is written
> without driver support.
>
> Fixes: c878d518d7b6 ("dt-bindings: can: mpfs: document the mpfs CAN controller")
> Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> ---
> This is the second mistake in this binding, both spotted because of the
> driver being written (although this one sat downstream for a while for
> w/e reason). I wish I could say that I'd send the driver soon, but I am
> busy upstreaming things I wrote and therefore understand at the moment,
> so a driver that I'd have to go understand and review before sending is
> low priority, sorry!
>
> CC: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> CC: Daire McNamara <daire.mcnamara@xxxxxxxxxxxxx>
> CC: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
> CC: Vincent Mailhol <mailhol@xxxxxxxxxx>
> CC: Rob Herring <robh@xxxxxxxxxx>
> CC: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
> CC: linux-riscv@xxxxxxxxxxxxxxxxxxx
> CC: linux-can@xxxxxxxxxxxxxxx
> CC: devicetree@xxxxxxxxxxxxxxx
> CC: linux-kernel@xxxxxxxxxxxxxxx
> ---
> .../devicetree/bindings/net/can/microchip,mpfs-can.yaml | 4 ++++
> 1 file changed, 4 insertions(+)
>
My bot found errors running 'make dt_binding_check' on your patch:
yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.example.dtb: can@2010c000 (microchip,mpfs-can): 'resets' is a required property
from schema $id: http://devicetree.org/schemas/net/can/microchip,mpfs-can.yaml
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20251117-twitter-sternness-f2b3a1506a6f@spud
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.