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Date:   Thu, 1 Oct 2020 09:30:16 +0530
From:   Calvin Johnson <calvin.johnson@....nxp.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Grant Likely <grant.likely@....com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Jeremy Linton <jeremy.linton@....com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Cristi Sovaiala <cristian.sovaiala@....com>,
        Florin Laurentiu Chiculita <florinlaurentiu.chiculita@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Madalin Bucur <madalin.bucur@....nxp.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux.cj@...il.com,
        netdev@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Diana Madalina Craciun <diana.craciun@....com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [net-next PATCH v1 3/7] net: phy: Introduce fwnode_get_phy_id()

On Wed, Sep 30, 2020 at 08:19:02PM +0200, Andrew Lunn wrote:
> On Wed, Sep 30, 2020 at 07:07:25PM +0100, Russell King - ARM Linux admin wrote:
> > On Wed, Sep 30, 2020 at 06:34:40PM +0200, Andrew Lunn wrote:
> > > > @@ -2866,7 +2888,15 @@ EXPORT_SYMBOL_GPL(device_phy_find_device);
> > > >   */
> > > >  struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode)
> > > >  {
> > > > -	return fwnode_find_reference(fwnode, "phy-handle", 0);
> > > > +	struct fwnode_handle *phy_node;
> > > > +
> > > > +	phy_node = fwnode_find_reference(fwnode, "phy-handle", 0);
> > > > +	if (is_acpi_node(fwnode) || !IS_ERR(phy_node))
> > > > +		return phy_node;
> > > > +	phy_node = fwnode_find_reference(fwnode, "phy", 0);
> > > > +	if (IS_ERR(phy_node))
> > > > +		phy_node = fwnode_find_reference(fwnode, "phy-device", 0);
> > > > +	return phy_node;
> > > 
> > > Why do you have three different ways to reference a PHY?
> > 
> > Compatibility with the DT version - note that "phy" and "phy-device"
> > are only used for non-ACPI fwnodes. This should allow us to convert
> > drivers where necessary without fear of causing DT regressions.
> 
> Ah.
> 
> A comment would be good here.

Sure. Will add comment.

Thanks
Calvin

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