[PATCH v2 8/8] drivers: net: macb: add fu740 support

[Green Wan]

On Wed, Mar 17, 2021 at 9:53 PM David Abdurachmanov <
david.abdurachmanov at gmail.com> wrote:

> On Tue, Mar 16, 2021 at 6:35 PM Green Wan <green.wan at sifive.com> wrote:
> >
> > From: David Abdurachmanov <david.abdurachmanov at sifive.com>
> >
> > Add fu740 support to macb ethernet driver
> >
> > Signed-off-by: David Abdurachmanov <david.abdurachmanov at sifive.com>
> > Signed-off-by: Green Wan <green.wan at sifive.com>
> > Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
> > ---
> >  drivers/net/macb.c | 8 +++++++-
> >  1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> > index 57ea45e..df65d82 100644
> > --- a/drivers/net/macb.c
> > +++ b/drivers/net/macb.c
> > @@ -592,7 +592,11 @@ static int macb_sifive_clk_init(struct udevice
> *dev, ulong rate)
> >          *     and output clock on GMII output signal GTX_CLK
> >          * 1 = MII mode. Use MII input signal TX_CLK in TX logic
> >          */
> > -       writel(rate != 125000000, gemgxl_regs);
> > +       if (device_is_compatible(dev, "sifive,fu540-c000-gem"))
> > +               writel(rate != 125000000, gemgxl_regs);
>
> Could you add a comment here why we need this? (i.e. about the HW quirk)
> Note that 125.125 is actually outside of specification for VSC8541XMV-02.
>
> Thanks, David. I'll add the comment for it.


> > +       else if (device_is_compatible(dev, "sifive,fu740-c000-gem"))
> > +               writel(rate != 125125000, gemgxl_regs);
> > +
> >         return 0;
> >  }
> >
> > @@ -1507,6 +1511,8 @@ static const struct udevice_id macb_eth_ids[] = {
> >         { .compatible = "cdns,zynq-gem" },
> >         { .compatible = "sifive,fu540-c000-gem",
> >           .data = (ulong)&sifive_config },
> > +       { .compatible = "sifive,fu740-c000-gem",
> > +         .data = (ulong)&sifive_config },
> >         { .compatible = "microchip,mpfs-mss-gem",
> >           .data = (ulong)&microchip_config },
> >         { }
> > --
> > 2.7.4
> >
>