netdev - Re: [net-next PATCH v2 2/3] Documentation: ACPI: DSD: Document MDIO PHY

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Message-ID: <20200703113550.GA16676@lsv03152.swis.in-blr01.nxp.com>
Date:   Fri, 3 Jul 2020 17:05:50 +0530
From:   Calvin Johnson <calvin.johnson@....nxp.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jeremy Linton <jeremy.linton@....com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Jon <jon@...id-run.com>,
        Cristi Sovaiala <cristian.sovaiala@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Madalin Bucur <madalin.bucur@....nxp.com>,
        netdev <netdev@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        linux.cj@...il.com, Len Brown <lenb@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [net-next PATCH v2 2/3] Documentation: ACPI: DSD: Document MDIO
 PHY

On Wed, Jul 01, 2020 at 01:27:43PM +0300, Andy Shevchenko wrote:
> On Wed, Jul 1, 2020 at 9:13 AM Calvin Johnson
> <calvin.johnson@....nxp.com> wrote:
> >
> > Introduce ACPI mechanism to get PHYs registered on a MDIO bus and
> > provide them to be connected to MAC.
> >
> > An ACPI node property "mdio-handle" is introduced to reference the
> > MDIO bus on which PHYs are registered with autoprobing method used
> > by mdiobus_register().
> 
> ...
> 
> > +                    Package (2) {"mdio-handle", Package (){\_SB.MDI0}}
> 
> Reference as a package? Hmm... Is it really possible to have more than
> one handle here?

I didn't get your question here. Is it becasue of the (2)? I'll remove them
as they are automatically counted.

But if it is about the reference as a package. We've other similar examples.
One of them here:
https://github.com/tianocore/edk2-platforms/blob/master/Silicon/Hisilicon/Hi1610/Hi1610AcpiTables/Dsdt/D03Hns.asl#L581

> 
> ...
> 
> > +                   Package (2) {"phy-channel", 2},
> > +                   Package (2) {"phy-mode", "rgmii-id"},
> > +                   Package (2) {"mdio-handle", Package (){\_SB.MDI0}}
> 
> And drop all these 2s. They are counted automatically by `iasl`.
> 
Thanks
Calvin