[PATCH] net: mv88e6xxx: add missing SMI address init

[Lukasz Majewski]

Hi Marek,

> On Wed, Nov 22, 2023 at 04:38:41PM +0100, Lukasz Majewski wrote:
> > Hi Marek,
> >   
> > > Driver does not currently initialize the smi_addr field, but
> > > instead keeps the default value. This leads to issues on systems
> > > with different hardware configuration. We can fix this problem by
> > > reading the SMI address from device tree.
> > > 
> > > Signed-off-by: Marek Mojík <marek.mojik at nic.cz>
> > > ---
> > >  drivers/net/mv88e6xxx.c | 6 ++++++
> > >  1 file changed, 6 insertions(+)
> > > 
> > > diff --git a/drivers/net/mv88e6xxx.c b/drivers/net/mv88e6xxx.c
> > > index c073f81e72..4636dbf156 100644
> > > --- a/drivers/net/mv88e6xxx.c
> > > +++ b/drivers/net/mv88e6xxx.c
> > > @@ -753,6 +753,12 @@ static int mv88e6xxx_probe(struct udevice
> > > *dev) return -ENODEV;
> > >  	}
> > >  
> > > +	priv->smi_addr = dev_read_addr(dev);
> > > +	if (priv->smi_addr == FDT_ADDR_T_NONE) {
> > > +		dev_err(dev, "Invalid or missing SMI address\n");
> > > +		return -EINVAL;
> > > +	}
> > > +
> > >  	/* probe internal mdio bus */
> > >  	ret = mv88e6xxx_probe_mdio(dev);
> > >  	if (ret)  
> > 
> > I've posted some time ago patches for this driver:
> > 
> > https://patchwork.ozlabs.org/project/uboot/cover/20230601100005.2216345-1-lukma@denx.de/
> > 
> > Unfortunately, those were not pulled...
> > 
> > Maybe you would find fix for your issue, or prepare new version of
> > it?  
> 
> I looked at your patches, but they don't fix the issue with smi_addr
> initialization. But i may try preparing a new version for them in
> future.
> 

No problem. I just wanted to share some insights. Moreover, I've also
posted some patches to the Linux kernel driver for this chip family.

> Regards,
> Marek




Best regards,

Lukasz Majewski

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