netdev - Re: [PATCH v1 2/3] net/fsl: acpize xgmac

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Message-ID: <20200617173414.GI205574@lunn.ch>
Date:   Wed, 17 Jun 2020 19:34:14 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Calvin Johnson <calvin.johnson@....nxp.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>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Madalin Bucur <madalin.bucur@....nxp.com>,
        netdev@...r.kernel.org, linux.cj@...il.com
Subject: Re: [PATCH v1 2/3] net/fsl: acpize xgmac_mdio

On Wed, Jun 17, 2020 at 10:45:34PM +0530, Calvin Johnson wrote:
> From: Jeremy Linton <jeremy.linton@....com>

> +static const struct acpi_device_id xgmac_acpi_match[] = {
> +	{ "NXP0006", (kernel_ulong_t)NULL },

Hi Jeremy

What exactly does NXP0006 represent? An XGMAC MDIO bus master? Some
NXP MDIO bus master? An XGMAC Ethernet controller which has an NXP
MDIO bus master? A cluster of Ethernet controllers?

Is this documented somewhere? In the DT world we have a clear
documentation for all the compatible strings. Is there anything
similar in the ACPI world for these magic numbers?

Thanks
     Andrew