linux-kernel - Re: [PATCH v2 1/5] dt-bindings: remoteproc: sse710: Add the External Systems remote processors

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Message-ID: <20240919093517.GA43740@e130802.arm.com>
Date: Thu, 19 Sep 2024 10:35:17 +0100
From: Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: mathieu.poirier@...aro.org, Adam.Johnston@....com,
	Hugues.KambaMpiana@....com, Drew.Reed@....com, andersson@...nel.org,
	conor+dt@...nel.org, devicetree@...r.kernel.org,
	krzysztof.kozlowski+dt@...aro.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-remoteproc@...r.kernel.org, liviu.dudau@....com,
	lpieralisi@...nel.org, robh@...nel.org, sudeep.holla@....com,
	robin.murphy@....com
Subject: Re: [PATCH v2 1/5] dt-bindings: remoteproc: sse710: Add the External
 Systems remote processors

Hi Krzysztof,

> > Add devicetree binding schema for the External Systems remote processors
> > 
> > The External Systems remote processors are provided on the Corstone-1000
> > IoT Reference Design Platform via the SSE-710 subsystem.
> > 
> > For more details about the External Systems, please see Corstone SSE-710
> > subsystem features [1].
> > 
> 
> Do not attach (thread) your patchsets to some other threads (unrelated
> or older versions). This buries them deep in the mailbox and might
> interfere with applying entire sets.
> 
> > [1]: https://developer.arm.com/documentation/102360/0000/Overview-of-Corstone-1000/Corstone-SSE-710-subsystem-features
> > 
> > Signed-off-by: Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
> > ---
> >  .../remoteproc/arm,sse710-extsys.yaml         | 90 +++++++++++++++++++
> >  1 file changed, 90 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/remoteproc/arm,sse710-extsys.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/remoteproc/arm,sse710-extsys.yaml b/Documentation/devicetree/bindings/remoteproc/arm,sse710-extsys.yaml
> > new file mode 100644
> > index 000000000000..827ba8d962f1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/remoteproc/arm,sse710-extsys.yaml
> > @@ -0,0 +1,90 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/remoteproc/arm,sse710-extsys.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: SSE-710 External System Remote Processor
> > +
> > +maintainers:
> > +  - Abdellatif El Khlifi <abdellatif.elkhlifi@....com>
> > +  - Hugues Kamba Mpiana <hugues.kambampiana@....com>
> > +
> > +description: |
> 
> dt-preserve-formatting

Do you mean I should remove the '|' please ? (I didn't find examples of use of
dt-preserve-formatting in Documentation/devicetree/bindings/)

> 
> > +  SSE-710 is an heterogeneous subsystem supporting up to two remote
> > +  processors aka the External Systems.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - arm,sse710-extsys
> > +
> > +  firmware-name:
> > +    description:
> > +      The default name of the firmware to load to the remote processor.
> > +
> > +  '#extsys-id':
> 
> '#' is not correct for sure, that's not a cell specifier.
> 
> But anyway, we do not accept in general instance IDs.

I'm happy to replace the instance ID with  another solution.
In our case the remoteproc instance does not have a base address
to use. So, we can't put remoteproc@...ress

What do you recommend in this case please ?

Kind regards,
Abdellatif