linux-kernel - Re: [PATCH net-next 1/8] net: phy: Add initial support for Microsemi Ocelot internal PHYs.

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Message-ID: <20180328161855.GJ13942@piout.net>
Date:   Wed, 28 Mar 2018 18:18:55 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Allan Nielsen <Allan.Nielsen@...rosemi.com>,
        razvan.stefanescu@....com, po.liu@....com,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mips@...ux-mips.org,
        Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
Subject: Re: [PATCH net-next 1/8] net: phy: Add initial support for Microsemi
 Ocelot internal PHYs.

On 23/03/2018 at 14:08:10 -0700, Florian Fainelli wrote:
> On 03/23/2018 01:11 PM, Alexandre Belloni wrote:
> > Add Microsemi Ocelot internal PHY ids. For now, simply use the genphy
> > functions but more features are available.
> > 
> > Cc: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
> > Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> > ---
> >  drivers/net/phy/mscc.c | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> > 
> > diff --git a/drivers/net/phy/mscc.c b/drivers/net/phy/mscc.c
> > index 650c2667d523..e1ab3acd1cdb 100644
> > --- a/drivers/net/phy/mscc.c
> > +++ b/drivers/net/phy/mscc.c
> > @@ -91,6 +91,7 @@ enum rgmii_rx_clock_delay {
> >  #define SECURE_ON_PASSWD_LEN_4		  0x4000
> >  
> >  /* Microsemi PHY ID's */
> > +#define PHY_ID_OCELOT			  0x00070540
> >  #define PHY_ID_VSC8530			  0x00070560
> >  #define PHY_ID_VSC8531			  0x00070570
> >  #define PHY_ID_VSC8540			  0x00070760
> > @@ -658,6 +659,19 @@ static int vsc85xx_probe(struct phy_device *phydev)
> >  
> >  /* Microsemi VSC85xx PHYs */
> >  static struct phy_driver vsc85xx_driver[] = {
> > +{
> > +	.phy_id		= PHY_ID_OCELOT,
> > +	.name		= "Microsemi OCELOT",
> > +	.phy_id_mask    = 0xfffffff0,
> > +	.features	= PHY_GBIT_FEATURES,
> > +	.soft_reset	= &genphy_soft_reset,
> > +	.config_init	= &genphy_config_init,
> > +	.config_aneg	= &genphy_config_aneg,
> > +	.aneg_done	= &genphy_aneg_done,
> > +	.read_status	= &genphy_read_status,
> > +	.suspend	= &genphy_suspend,
> > +	.resume		= &genphy_resume,
> 
> With the exception of config_init(), suspend and resume, everything else
> is already the default when you don't provide a callback. To echo to
> what Andrew wrote already, if the purpose is just to show a nice name,
> and do nothing else, consider using the Generic PHY driver (default).

Ok, I'll drop this patch for now, until we handle more features for that
PHY.

-- 
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com