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net: mediatek: mt7988: restore PHY page on PHY setting exit

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On exiting the phy_setting function for MT7988, the PHY page is never
restored to Page 0. This can cause all kind of problem with reading the
status of the PHY at runtime.

Correctly restore PHY page on exiting the PHY setting function.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2025-09-20 18:09:42 +02:00 committed by Jerome Forissier
parent 9b2e1079e7
commit 85f3d070e2
1 changed files with 6 additions and 1 deletions
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7
drivers/net/mtk_eth/mt7988.c
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@ -34,8 +34,10 @@ static void mt7988_phy_setting(struct mt753x_switch_priv *priv)
u32 i;
for (i = 0; i < MT753X_NUM_PHYS; i++) {
/* Enable HW auto downshift */
/* Set PHY to PHY page 1 */
mt7531_mii_write(priv, i, 0x1f, 0x1);
/* Enable HW auto downshift */
val = mt7531_mii_read(priv, i, PHY_EXT_REG_14);
val |= PHY_EN_DOWN_SHFIT;
mt7531_mii_write(priv, i, PHY_EXT_REG_14, val);
@ -44,6 +46,9 @@ static void mt7988_phy_setting(struct mt753x_switch_priv *priv)
val = mt7531_mii_read(priv, i, PHY_EXT_REG_17);
val |= PHY_LINKDOWN_POWER_SAVING_EN;
mt7531_mii_write(priv, i, PHY_EXT_REG_17, val);
/* Restore PHY to PHY page 0 */
mt7531_mii_write(priv, i, 0x1f, 0x0);
}
}