On Mon, Aug 19, 2024 at 03:15:41PM +0100, Simon Horman wrote:
> On Sun, Aug 18, 2024 at 09:50:46PM +0000, Jan Petrous (OSS) wrote:
> > The helper rgmii_clock() implemented Russel's hint during stmmac
> > glue driver review:
> >
> > ---
> > We seem to have multiple cases of very similar logic in lots of stmmac
> > platform drivers, and I think it's about time we said no more to this.
> > So, what I think we should do is as follows:
> >
> > add the following helper - either in stmmac, or more generically
> > (phylib? - in which case its name will need changing.)
> >
> > static long stmmac_get_rgmii_clock(int speed)
> > {
> > switch (speed) {
> > case SPEED_10:
> > return 2500000;
> >
> > case SPEED_100:
> > return 25000000;
> >
> > case SPEED_1000:
> > return 125000000;
> >
> > default:
> > return -ENVAL;
> > }
> > }
> >
> > Then, this can become:
> >
> > long tx_clk_rate;
> >
> > ...
> >
> > tx_clk_rate = stmmac_get_rgmii_clock(speed);
> > if (tx_clk_rate < 0) {
> > dev_err(gmac->dev, "Unsupported/Invalid speed: %d\n", speed);
> > return;
> > }
> >
> > ret = clk_set_rate(gmac->tx_clk, tx_clk_rate);
> > ---
> >
> > Signed-off-by: Jan Petrous (OSS) <jan.petrous@xxxxxxxxxxx>
> > ---
> > include/linux/phy.h | 21 +++++++++++++++++++++
> > 1 file changed, 21 insertions(+)
> >
> > diff --git a/include/linux/phy.h b/include/linux/phy.h
> > index 6b7d40d49129..bb797364d91c 100644
> > --- a/include/linux/phy.h
> > +++ b/include/linux/phy.h
> > @@ -298,6 +298,27 @@ static inline const char *phy_modes(phy_interface_t interface)
> > }
> > }
> >
> > +/**
> > + * rgmi_clock - map link speed to the clock rate
>
> nit: rgmii_clock
>
> Flagged by ./scripts/kernel-doc -none
>
Thanks. Fixed in v3.
BR.
/Jan
