Messages in this thread | | | Date | Thu, 9 May 2024 07:53:42 +0200 | Subject | Re: [PATCH 1/4] dt-bindings: firmware: secvio: Add device tree bindings | From | Krzysztof Kozlowski <> |
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On 09/05/2024 02:45, Vabhav Sharma wrote: > Document the secvio device tree bindings. > > The tampers are security feature available on i.MX products and > managed by SNVS block.The tamper goal is to detect the variation > of hardware or physical parameters, which can indicate an attack. > > The SNVS, which provides secure non-volatile storage, allows to > detect some hardware attacks against the SoC.They are connected > to the security-violation ports, which send an alert when an > out-of-range value is detected. > > The "imx-secvio-sc" module is designed to report security violations > and tamper triggering via SCU firmware to the user. > > Add the imx-scu secvio sub node and secvio sub node description. > > Signed-off-by: Franck LENORMAND <franck.lenormand@nxp.com> > Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com> > ---
That's not v1, right? What changed? Why do we have to guess this?
This is thoroughly documented in kernel process so read the documentation before posting.
> .../bindings/arm/freescale/fsl,scu-secvio.yaml | 35 ++++++++++++++++++++++ > .../devicetree/bindings/firmware/fsl,scu.yaml | 10 +++++++ > 2 files changed, 45 insertions(+) > > diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu-secvio.yaml b/Documentation/devicetree/bindings/arm/freescale/fsl,scu-secvio.yaml > new file mode 100644 > index 000000000000..30dc1e21f903 > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu-secvio.yaml > @@ -0,0 +1,35 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/arm/freescale/fsl,scu-secvio.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: NXP i.MX Security Violation driver
Bindings are for hardware, not drivers. Describe hardware.
> + > +maintainers: > + - Franck LENORMAND <franck.lenormand@nxp.com> > + > +description: |
Do not need '|' unless you need to preserve formatting.
> + Receive security violation from the SNVS via the SCU firmware. Allow to > + register notifier for additional processing
Notifier? That's a Linux thing, how does it relate to the hardware?
> + > +properties: > + compatible: > + enum: > + - fsl,imx-sc-secvio
Missing SoC compatibles.
So no, that's just abuse of DT to instantiate driver.
NAK. Drop the binding.
Best regards, Krzysztof
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