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kernel: rtl8261n: always configure as USXGMII

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In the past, all the configuration of SerDes and PHYs on the realtek
switches were done  using u-boot (`rtk init`). But since RTL930x switched
to SerDes configuration under Linux, the SoC side is no longer using the
Realtek-proprietary variant of USXGMII. The communication to the RTL8261N
PHYs on those switches broke because of this incompatibility.

Enabling the full initialization on `CONFIG_MACH_REALTEK_RTL` converts also
the PHY side to the standard USXGMII and therefore ensures that both sides
speak the same dialect.

Co-authored-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Link: https://github.com/openwrt/openwrt/pull/23076
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Sven Eckelmann 2026-04-24 08:50:21 +02:00 committed by Hauke Mehrtens
parent 017bf1c37e
commit dd5bd85a1f
1 changed files with 0 additions and 3 deletions
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3
target/linux/generic/files/drivers/net/phy/rtl8261n/rtk_phy.c
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@ -78,9 +78,6 @@ static int rtkphy_config_init(struct phy_device *phydev)
case REALTEK_PHY_ID_RTL8264B:
case REALTEK_PHY_ID_RTL8264:
phydev_info(phydev, "%s:%u [RTL8261N/RTL8264/RTL826XB] phy_id: 0x%X PHYAD:%d\n", __FUNCTION__, __LINE__, phydev->drv->phy_id, phydev->mdio.addr);
#ifdef CONFIG_MACH_REALTEK_RTL
return 0;
#endif
#if 1 /* toggle reset */
phy_modify_mmd_changed(phydev, 30, 0x145, BIT(0) , 1);