linux-kernel - Re: [PATCH v2 2/2] dt-bindings: mailbox: qcom: Add IPCC support for Glymur Platform

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Message-ID: <qyfxtoe7ixko7k5whtzjpkynwpeqxzb2sgwq7y4y3kstblapz5@ggny5uq7qv6s>
Date: Wed, 29 Oct 2025 12:23:14 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Jingyi Wang <jingyi.wang@....qualcomm.com>, 
	Manivannan Sadhasivam <mani@...nel.org>, Jassi Brar <jassisinghbrar@...il.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, aiqun.yu@....qualcomm.com, tingwei.zhang@....qualcomm.com, 
	trilok.soni@....qualcomm.com, yijie.yang@....qualcomm.com, linux-arm-msm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
	Sibi Sankar <sibi.sankar@....qualcomm.com>
Subject: Re: [PATCH v2 2/2] dt-bindings: mailbox: qcom: Add IPCC support for
 Glymur Platform

On Wed, Oct 29, 2025 at 04:49:30PM +0100, Krzysztof Kozlowski wrote:
> On 29/10/2025 09:15, Jingyi Wang wrote:
> > diff --git a/include/dt-bindings/mailbox/qcom,glymur-ipcc.h b/include/dt-bindings/mailbox/qcom,glymur-ipcc.h
> > new file mode 100644
> > index 000000000000..3ab8189974a5
> > --- /dev/null
> > +++ b/include/dt-bindings/mailbox/qcom,glymur-ipcc.h
> > @@ -0,0 +1,68 @@
> > +/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
> > +/*
> > + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
> > + */
> > +
> > +#ifndef __DT_BINDINGS_MAILBOX_IPCC_GLYMUR_H
> > +#define __DT_BINDINGS_MAILBOX_IPCC_GLYMUR_H
> > +
> > +/* Glymur physical client IDs */
> > +#define IPCC_MPROC_AOP			0
> 
> 
> Here the same - not used by Linux.

How is this different from e.g.:

include/dt-bindings/interrupt-controller/arm-gic.h:#define GIC_SPI 0

Perhaps I'm misunderstanding what you're saying here.

> Don't add these, they are really not
> necessary and they are not helping anyhow. For longer explanation see 2
> year thread for PMIC ADC v7.
> 

I'm sorry, I'm not able to wrangle a lore query for this, can you please
provide a link?

> Or provide explanation in terms what Linux interface you are binding
> here (please focus on Linux or other SW).
> 

Don't we use include/dt-bindings to define hardware constants for use in
dt source as well? Has this changed?

Regards,
Bjorn

> Best regards,
> Krzysztof
>