linux-kernel - RE: [EXT] Re: [PATCH v7 3/4] dt-bindings: irqchip: imx mu work as msi controller

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Message-ID: <PAXPR04MB918622BAC0F686AB51BC505788769@PAXPR04MB9186.eurprd04.prod.outlook.com>
Date:   Mon, 29 Aug 2022 14:47:55 +0000
From:   Frank Li <frank.li@....com>
To:     Marc Zyngier <maz@...nel.org>, Rob Herring <robh@...nel.org>
CC:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kw@...ux.com" <kw@...ux.com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Peng Fan <peng.fan@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        "jdmason@...zu.us" <jdmason@...zu.us>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "kishon@...com" <kishon@...com>,
        "lorenzo.pieralisi@....com" <lorenzo.pieralisi@....com>,
        "ntb@...ts.linux.dev" <ntb@...ts.linux.dev>,
        "lznuaa@...il.com" <lznuaa@...il.com>
Subject: RE: [EXT] Re: [PATCH v7 3/4] dt-bindings: irqchip: imx mu work as msi
 controller



> -----Original Message-----
> From: Marc Zyngier <maz@...nel.org>
> Sent: Friday, August 26, 2022 4:45 PM
> To: Frank Li <frank.li@....com>
> Cc: Rob Herring <robh@...nel.org>; tglx@...utronix.de;
> krzysztof.kozlowski+dt@...aro.org; shawnguo@...nel.org;
> s.hauer@...gutronix.de; kw@...ux.com; bhelgaas@...gle.com; linux-
> kernel@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-pci@...r.kernel.org; Peng Fan
> <peng.fan@....com>; Aisheng Dong <aisheng.dong@....com>;
> jdmason@...zu.us; kernel@...gutronix.de; festevam@...il.com; dl-linux-
> imx <linux-imx@....com>; kishon@...com; lorenzo.pieralisi@....com;
> ntb@...ts.linux.dev; lznuaa@...il.com
> Subject: Re: [EXT] Re: [PATCH v7 3/4] dt-bindings: irqchip: imx mu work as
> msi controller
> 
> Caution: EXT Email
> 
> On Fri, 26 Aug 2022 19:59:44 +0100,
> Frank Li <frank.li@....com> wrote:
> >
> > > And I stand by my initial request. "a" doesn't convey any sort of
> > > useful information. Why not "I" and "II", while we're at it? Or
> > > something even funkier?
> >
> > MU spec use term "a" and "b",  user have to map "I" an "II" to
> > "a" and "b" when read MU spec and code. it is not straightforward.
> >
> > I quote a part of spec.
> > " The MU is connected as a peripheral under the Peripheral bus on both
> sides-on
> > the Processor A-side, the Processor A Peripheral Bus, and on the Processor
> B side,
> > the Processor B Peripheral Bus."
> >
> > Rob Herring and Marc Zynginer:
> > I can change to any name, which you agree both.
> >
> > Some options:
> > 1. "a", "b"
> > 2. "a-side", "b-side"
> > 3. "a-facing", "b-facing"
> > 4. "I", "II"
> 
> Use the wording indicated in the spec: "processor-a-side", and
> "processor-b-side". This is what I asked the first place.

@Rob Herring:  Do you agree this name?

[Frank Li] 

> 
>         M.
> 
> --
> Without deviation from the norm, progress is not possible.