[U-Boot] [PATCH] net: phy: marvell: Add functions to read PHY's extended registers

[Lukasz Majewski <lukma@denx.de>]

On Thu, 26 Oct 2017 17:15:19 +0200
Lukasz Majewski <lukma@denx.de> wrote:

> On Thu, 26 Oct 2017 15:05:18 +0000
> York Sun <york.sun@nxp.com> wrote:
> 
> > On 09/29/2017 07:48 AM, Lukasz Majewski wrote:
> > > This commit allows extended Marvell registers to be read with:
> > > 
> > > foo > mdio rx FEC 3.10
> > > Reading from bus FEC
> > > PHY at address 0:
> > > 3.16 - 0x1063
> > > foo > mdio wx FEC 3.10 0x1011
> > > 
> > > The above code changes the way ETH connector LEDs blink.
> > > 
> > > Signed-off-by: Lukasz Majewski <lukma@denx.de>
> > > ---
> > >  drivers/net/phy/marvell.c | 27 +++++++++++++++++++++++++++
> > >  1 file changed, 27 insertions(+)
> > > 
> > > diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
> > > index b7f300e..a167c34 100644
> > > --- a/drivers/net/phy/marvell.c
> > > +++ b/drivers/net/phy/marvell.c
> > > @@ -104,6 +104,31 @@
> > >  #define MIIM_88E151x_MODE_SGMII		1
> > >  #define MIIM_88E151x_RESET_OFFS		15
> > >  
> > > +static int m88e1xxx_phy_extread(struct phy_device *phydev, int
> > > addr,
> > > +				int devaddr, int regnum)
> > > +{
> > > +	int oldpage = phy_read(phydev, MDIO_DEVAD_NONE,
> > > MII_MARVELL_PHY_PAGE);
> > > +	int val;
> > > +
> > > +	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE,
> > > devaddr);
> > > +	val = phy_read(phydev, MDIO_DEVAD_NONE, regnum);
> > > +	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE,
> > > oldpage); +
> > > +	return val;
> > > +}
> > > +
> > > +static int m88e1xxx_phy_extwrite(struct phy_device *phydev, int
> > > addr,
> > > +				 int devaddr, int regnum, u16
> > > val) +{
> > > +	int oldpage = phy_read(phydev, MDIO_DEVAD_NONE,
> > > MII_MARVELL_PHY_PAGE); +
> > > +	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE,
> > > devaddr);
> > > +	phy_write(phydev, MDIO_DEVAD_NONE, regnum, val);
> > > +	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE,
> > > oldpage); +
> > > +	return 0;
> > > +}
> > > +
> > >  /* Marvell 88E1011S */
> > >  static int m88e1011s_config(struct phy_device *phydev)
> > >  {
> > > @@ -669,6 +694,8 @@ static struct phy_driver M88E1510_driver = {
> > >  	.config = &m88e1510_config,
> > >  	.startup = &m88e1011s_startup,
> > >  	.shutdown = &genphy_shutdown,
> > > +	.readext = &m88e1xxx_phy_extread,
> > > +	.writeext = &m88e1xxx_phy_extwrite,
> > >  };
> > >  
> > >  /*
> > > 
> > 
> > 
> > I guess this feature is usable. You only enable it for M88E1510. Can
> > the same be applied to other Marvell PHYs?
> 
> It should work...
> 
> However, in this patch I've only enabled one - which I could test.....
> 
> I can enable more if you can help me with debugging.

s/debugging/testing

> 
> > 
> > York
> 
> 
> 
> 
> Best regards,
> 
> Lukasz Majewski
> 
> --
> 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de



Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de