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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Fri, 5 Feb 2021 20:25:09 +0200
Message-ID: <CAHp75VdX2gZbt-eYp31wg0r+yih8omGxcTf6cMyhxjMZZYzFuQ@mail.gmail.com>
Subject: Re: [net-next PATCH v4 07/15] net: mdiobus: Introduce fwnode_mdiobus_register_phy()
To:     Calvin Johnson <calvin.johnson@oss.nxp.com>
Cc:     Grant Likely <grant.likely@arm.com>,
        "Rafael J . Wysocki" <rafael@kernel.org>,
        Jeremy Linton <jeremy.linton@arm.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Russell King - ARM Linux admin <linux@armlinux.org.uk>,
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        Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
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        Jon <jon@solid-run.com>, Saravana Kannan <saravanak@google.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        "linux.cj" <linux.cj@gmail.com>,
        Diana Madalina Craciun <diana.craciun@nxp.com>,
        ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
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On Fri, Feb 5, 2021 at 7:25 PM Calvin Johnson
<calvin.johnson@oss.nxp.com> wrote:
> On Fri, Jan 22, 2021 at 09:12:52PM +0530, Calvin Johnson wrote:

...

> > +     rc = fwnode_property_match_string(child, "compatible", "ethernet-phy-ieee802.3-c45");
> With ACPI, I'm facing some problem with fwnode_property_match_string(). It is
> unable to detect the compatible string and returns -EPROTO.
>
> ACPI node for PHY4 is as below:
>
>  Device(PHY4) {
>     Name (_ADR, 0x4)
>     Name(_CRS, ResourceTemplate() {
>     Interrupt(ResourceConsumer, Level, ActiveHigh, Shared)
>     {
>       AQR_PHY4_IT
>     }
>     }) // end of _CRS for PHY4
>     Name (_DSD, Package () {
>       ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
>         Package () {
>           Package () {"compatible", "ethernet-phy-ieee802.3-c45"}
>        }
>     })
>   } // end of PHY4
>
>  What is see is that in acpi_data_get_property(),
> propvalue->type = 0x2(ACPI_TYPE_STRING) and type = 0x4(ACPI_TYPE_PACKAGE).
>
> Any help please?
>
> fwnode_property_match_string() works fine for DT.

Can you show the DT node which works and also input for the
)match_string() (i.o.w what exactly you are trying to match with)?

-- 
With Best Regards,
Andy Shevchenko