Commit Graph

2 Commits

Author SHA1 Message Date
Álvaro Fernández Rojas
7673a165a9 generic: 6.6: backport upstream v6.15 Realtek PHY patches
bfc17c1658353 net: phy: realtek: disable PHY-mode EEE
fabcfd6d10999 net: phy: realtek: add defines for shadowed c45 standard registers
8af2136e77989 net: phy: realtek: add helper RTL822X_VND2_C22_REG
02d3b306ac2f0 net: phy: realtek: switch from paged to MMD ops in rtl822x functions
da681ed73fb98 net: phy: realtek: improve mmd register access for internal PHY's
0bea93fdbaf86 net: phy: realtek: use string choices helpers
51773846fab24 net: phy: realtek: make HWMON support a user-visible Kconfig symbol

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2025-04-22 17:08:27 +02:00
Daniel Golle
c87a767801 generic: net: phy: realtek: work-around hang on SerDes setup
On some but not all devices using the RTL8221B 2.5GBit/s PHY the SerDes
setup sequence may hang under some circumstances (eg. <2500M link
partner present during boot).

RTL8221B-VB-CG 2.5Gbps PHY (C45) mdio-bus:01: rtl822xb_config_init failed: -110

Work-around the issue by performing a hardware reset and subsequent
retry of the SerDes setup, which seems to always succeed.

Doing this requires moving ALDPS setup to config_init (which is anyway
the better place for that) as it otherwise doesn't survive the reset.

Also disable listening on MDIO address 0 which may be used by other PHYs
despite being spec'ed as "broadcast address", as bus activity on address
0 may otherwise confuse the RealTek PHY for good reasons.

Tested-by: Luis Mita <luis@luismita.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2025-01-30 19:17:27 +00:00