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Date: Tue, 4 Aug 2026 11:13:10 -0500
From: Bjorn Andersson <andersson@kernel.org>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>, 
	Mathieu Poirier <mathieu.poirier@linaro.org>, Rob Herring <robh@kernel.org>, 
	Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, 
	Konrad Dybcio <konradybcio@kernel.org>, Manivannan Sadhasivam <mani@kernel.org>, 
	linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, 
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: remoteproc: qcom,sm8550-pas: Make
 SDX75, Hawi and Maili MPSS fallback to SM8650
Message-ID: <anIPU5RKjWCya-5T@baldur>
References: <20260803180021.20368-1-mukesh.ojha@oss.qualcomm.com>
 <20260804-acoustic-military-coua-cb0caf@quoll>
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In-Reply-To: <20260804-acoustic-military-coua-cb0caf@quoll>

On Tue, Aug 04, 2026 at 10:41:19AM +0200, Krzysztof Kozlowski wrote:
> On Mon, Aug 03, 2026 at 11:30:20PM +0530, Mukesh Ojha wrote:
> > SDX75, Hawi and Maili MPSS are compatible with the SM8650 MPSS as
> > they share the same set of interrupts, memory regions and power domains.
> > Rather than describing them as standalone compatibles, model them as
> > fallbacks to qcom,sm8650-mpss-pas.
> > 
> > Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
> > ---
> >  .../bindings/remoteproc/qcom,sm8550-pas.yaml  | 29 +++++++++----------
> >  1 file changed, 14 insertions(+), 15 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
> > index a062188861ff..f722c55aadf4 100644
> > --- a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
> > +++ b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
> > @@ -18,9 +18,6 @@ properties:
> >      oneOf:
> >        - enum:
> >            - qcom,eliza-cdsp-pas
> > -          - qcom,hawi-mpss-pas
> 
> There is no known user of this.
> 
> Why do we even document this?
> 
> This is unfortunately one more example why I should accept early
> bindings without users.
> 

Thanks for catching this, Krzysztof. As written, this clearly should
have been accompanied by a driver patch.

Regards,
Bjorn

> Best regards,
> Krzysztof
>