[PATCH phy-next 13/22] phy: introduce phy_get_max_link_rate() helper for consumers

[Geert Uytterhoeven]

Hi Vladimir,

On Wed, 4 Mar 2026 at 19:00, Vladimir Oltean <vladimir.oltean at nxp.com> wrote:
> Consumer drivers shouldn't dereference struct phy, not even to get to
> its attributes.
>
> We have phy_get_bus_width() as a precedent for getting the bus_width
> attribute, so let's add phy_get_max_link_rate() and use it in DRM and
> CAN drivers.
>
> Signed-off-by: Vladimir Oltean <vladimir.oltean at nxp.com>

Thanks for your patch!

>  drivers/net/can/rcar/rcar_canfd.c                   | 2 +-

For the Renesas part:
Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>

> --- a/drivers/phy/phy-core.c
> +++ b/drivers/phy/phy-core.c
> @@ -640,6 +640,12 @@ void phy_set_bus_width(struct phy *phy, int bus_width)
>  }
>  EXPORT_SYMBOL_GPL(phy_set_bus_width);
>
> +u32 phy_get_max_link_rate(struct phy *phy)
> +{
> +       return phy->attrs.max_link_rate;
> +}
> +EXPORT_SYMBOL_GPL(phy_get_max_link_rate);

Any specific reason you are not making this a simple static inline
function, like phy_get_bus_width()?

> +
>  /**
>   * _of_phy_get() - lookup and obtain a reference to a phy by phandle
>   * @np: device_node for which to get the phy

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds