netdev - Re: [PATCH] net: Phy: Add PHY lookup support on MDIO bus in case of ACPI probe

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Message-ID: <7668185a-79c5-0be8-fabf-dec7b3a7983f@gmail.com>
Date:   Fri, 31 Jul 2020 22:08:38 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vikas Singh <vikas.singh@...esoftware.com>,
        Andrew Lunn <andrew@...n.ch>
Cc:     hkallweit1@...il.com, linux@...linux.org.uk,
        netdev@...r.kernel.org,
        "Calvin Johnson (OSS)" <calvin.johnson@....nxp.com>,
        Kuldip Dwivedi <kuldip.dwivedi@...esoftware.com>,
        "Madalin Bucur (OSS)" <madalin.bucur@....nxp.com>,
        Vikas Singh <vikas.singh@....com>
Subject: Re: [PATCH] net: Phy: Add PHY lookup support on MDIO bus in case of
 ACPI probe



On 7/31/2020 9:53 PM, Vikas Singh wrote:
> Hi Andrew,
>  
> As i have already mentioned that this patch is based on
> https://www.spinics.net/lists/netdev/msg662173.html,
> <https://www.spinics.net/lists/netdev/msg662173.html>
> 
> When MDIO bus gets registered itself along with devices on it , the
> function mdiobus_register() inside of_mdiobus_register(), brings
> up all the PHYs on the mdio bus and attach them to the bus with the help
> of_mdiobus_link_mdiodev() inside mdiobus_scan() .
> Additionally it has been discussed with the maintainers that the
> mdiobus_register() function should be capable of handling both ACPI &
> DTB stuff
> without any change to existing implementation.
> Now of_mdiobus_link_mdiodev() inside mdiobus_scan() see if the
> auto-probed phy has a corresponding child in the bus node, and set the
> "of_node" pointer in DT case.
> But lacks to set the "fwnode" pointer in ACPI case which is resulting in
> mdiobus_register() failure as an end result theoretically.
> 
> Now this patch set (changes) will attempt to fill this gap and
> generalise the mdiobus_register() implementation for both ACPI & DT with
> no duplicacy or redundancy.

Please reply in plain text and do not top-post, thank you.
-- 
Florian