[net-next RFC PATCH v2 3/3] net: phy: Add Airoha AN8855 Internal Switch Gigabit PHY

[Andrew Lunn]

> +static int an8855_config_init(struct phy_device *phydev)
> +{
> +	struct air_an8855_priv *priv = phydev->priv;
> +	int ret;
> +
> +	/* Enable HW auto downshift */
> +	ret = phy_write(phydev, AN8855_PHY_PAGE_CTRL, AN8855_PHY_EXT_PAGE);
> +	if (ret)
> +		return ret;
> +	ret = phy_set_bits(phydev, AN8855_PHY_EXT_REG_14,
> +			   AN8855_PHY_EN_DOWN_SHFIT);
> +	if (ret)
> +		return ret;
> +	ret = phy_write(phydev, AN8855_PHY_PAGE_CTRL, AN8855_PHY_NORMAL_PAGE);
> +	if (ret)
> +		return ret;

There are locking issues here, which is why we have the helpers
phy_select_page() and phy_restore_page(). The air_en8811h.c gets this
right.

Is there anything in common with the en8811h? Does it also support
downshift? Can its LED code be used here?

	   Andrew