Re: [PATCH v3 08/13] net: phy: add qca8081 config_aneg

Andrew Lunn
2021-10-18T21:38:13Z

On Mon, Oct 18, 2021 at 11:33:28AM +0800, Luo Jie wrote:
> Reuse at803x phy driver config_aneg excepting
> adding 2500M auto-negotiation.
>
> Signed-off-by: Luo Jie <luoj@codeaurora.org>
> ---
> drivers/net/phy/at803x.c | 26 +++++++++++++++++++++++++-
> 1 file changed, 25 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
> index 0c22ef735230..c124d3fe40fb 100644
> --- a/drivers/net/phy/at803x.c
> +++ b/drivers/net/phy/at803x.c
> @@ -1084,7 +1084,30 @@ static int at803x_config_aneg(struct phy_device *phydev)
> return ret;
> }
>
> - return genphy_config_aneg(phydev);
> + /* Do not restart auto-negotiation by setting ret to 0 defautly,
> + * when calling __genphy_config_aneg later.
> + */
> + ret = 0;
> +
> + if (phydev->drv->phy_id == QCA8081_PHY_ID) {
> + int phy_ctrl = 0;
> +
> + /* The reg MII_BMCR also needs to be configured for force mode, the
> + * genphy_config_aneg is also needed.
> + */
> + if (phydev->autoneg == AUTONEG_DISABLE)
> + genphy_c45_pma_setup_forced(phydev);
> +
> + if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->advertising))
> + phy_ctrl = MDIO_AN_10GBT_CTRL_ADV2_5G;
> +
> + ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
> + MDIO_AN_10GBT_CTRL_ADV2_5G, phy_ctrl);

Does the PHY also have MDIO_MMD_AN, MDIO_AN_ADVERTISE ? I'm wondering
if you can use genphy_c45_an_config_aneg()

Andrew