diff options
| author | Daniel Golle <daniel@makrotopia.org> | 2023-03-14 00:34:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-03-15 08:58:13 +0000 |
| commit | 611e2dabb4b3243d176739fd6a5a34d007fa3f86 (patch) | |
| tree | a0ded4f567dbee2abc6db66d496cbfd78656214a /drivers/net/ethernet/mediatek/mtk_sgmii.c | |
| parent | d8b228318935044dafe3a5bc07ee71a1f1424b8d (diff) | |
| download | linux-611e2dabb4b3243d176739fd6a5a34d007fa3f86.tar.gz | |
net: ethernet: mtk_eth_soc: reset PCS state
Reset the internal PCS state machine when changing interface mode.
This prevents confusing the state machine when changing interface
modes, e.g. from SGMII to 2500Base-X or vice-versa.
Fixes: 7e538372694b ("net: ethernet: mediatek: Re-add support SGMII")
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_sgmii.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_sgmii.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index bb00de1003ac..612f65bb0345 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -88,6 +88,10 @@ static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode, regmap_update_bits(mpcs->regmap, SGMSYS_QPHY_PWR_STATE_CTRL, SGMII_PHYA_PWD, SGMII_PHYA_PWD); + /* Reset SGMII PCS state */ + regmap_update_bits(mpcs->regmap, SGMII_RESERVED_0, + SGMII_SW_RESET, SGMII_SW_RESET); + if (interface == PHY_INTERFACE_MODE_2500BASEX) rgc3 = RG_PHY_SPEED_3_125G; else |