[PATCH u-boot-marvell 06/19] net: mdio-uclass: add dm_phy_find_by_ofnode() helper

[Ramon Fried]

On Wed, Apr 27, 2022 at 1:42 PM Marek Behún <kabel at kernel.org> wrote:
>
> From: Marek Behún <marek.behun at nic.cz>
>
> Add helper to resolve PHY node from it's ofnode via DM MDIO subsystem.
>
> Signed-off-by: Marek Behún <marek.behun at nic.cz>
> ---
>  include/miiphy.h  |  9 +++++++++
>  net/mdio-uclass.c | 22 ++++++++++++++++++++++
>  2 files changed, 31 insertions(+)
>
> diff --git a/include/miiphy.h b/include/miiphy.h
> index 110921f20d..c66a1845b5 100644
> --- a/include/miiphy.h
> +++ b/include/miiphy.h
> @@ -188,6 +188,15 @@ int dm_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 va
>   */
>  int dm_mdio_reset(struct udevice *mdio_dev);
>
> +/**
> + * dm_phy_find_by_ofnode - Find PHY device by ofnode
> + *
> + * @phynode: PHY's ofnode
> + *
> + * Return: pointer to phy_device, or NULL on error
> + */
> +struct phy_device *dm_phy_find_by_ofnode(ofnode phynode);
> +
>  /**
>   * dm_mdio_phy_connect - Wrapper over phy_connect for DM MDIO
>   *
> diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c
> index 7593618d9a..4401492ca0 100644
> --- a/net/mdio-uclass.c
> +++ b/net/mdio-uclass.c
> @@ -129,6 +129,28 @@ static int dm_mdio_pre_remove(struct udevice *dev)
>         return 0;
>  }
>
> +struct phy_device *dm_phy_find_by_ofnode(ofnode phynode)
> +{
> +       struct mdio_perdev_priv *pdata;
> +       struct udevice *mdiodev;
> +       u32 phy_addr;
> +
> +       if (ofnode_read_u32(phynode, "reg", &phy_addr))
> +               return NULL;
> +
> +       if (uclass_get_device_by_ofnode(UCLASS_MDIO,
> +                                       ofnode_get_parent(phynode),
> +                                       &mdiodev))
> +               return NULL;
> +
> +       if (device_probe(mdiodev))
> +               return NULL;
> +
> +       pdata = dev_get_uclass_priv(mdiodev);
> +
> +       return phy_find_by_mask(pdata->mii_bus, BIT(phy_addr));
> +}
> +
>  struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr,
>                                        struct udevice *ethdev,
>                                        phy_interface_t interface)
> --
> 2.35.1
>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>