Turris SFP+ not working on kernel 5.15

It appears that Turris SFP+ does not get set up correctly in HBL (Turris OS 6.0) on Turris Omnia:

[    7.947564] sfp sfp: Host maximum power 3.0W
[    8.277850] sfp sfp: module Turris           RTSFP-10G        rev A    sn 2109150236       dc 210915  
[   12.329759] mvneta f1034000.ethernet eth2: configuring for inband/sgmii link mode
[   14.177653] sfp sfp: no PHY detected
[   14.181290] mvneta f1034000.ethernet eth2: validation with support 0000000,00000000,000020c0 failed: -22

# uname -a
Linux omnia 5.15.59 #0 SMP Thu Aug 11 11:58:26 2022 armv7l GNU/Linux

# ethtool --module-info eth2
	Identifier                                : 0x03 (SFP)
	Extended identifier                       : 0x04 (GBIC/SFP defined by 2-wire interface ID)
	Connector                                 : 0x22 (RJ45)
	Transceiver codes                         : 0x10 0x00 0x00 0x00 0x00 0x08 0x00 0x00 0x16
	Transceiver type                          : 10G Ethernet: 10G Base-SR
	Transceiver type                          : Active Cable
	Transceiver type                          : Extended: 10Gbase-T with SFI electrical interface
	Encoding                                  : 0x06 (64B/66B)
	BR, Nominal                               : 10300MBd
	Rate identifier                           : 0x00 (unspecified)
	Length (SMF,km)                           : 0km
	Length (SMF)                              : 0m
	Length (50um)                             : 80m
	Length (62.5um)                           : 30m
	Length (Copper)                           : 0m
	Length (OM3)                              : 300m
	Active Cu cmplnce.                        : 0x03 (unknown) [SFF-8472 rev10.4 only]
	Vendor name                               : Turris
	Vendor OUI                                : 00:90:65
	Vendor PN                                 : RTSFP-10G
	Vendor rev                                : A
	Option values                             : 0x00 0x1a
	Option                                    : RX_LOS implemented
	Option                                    : TX_FAULT implemented
	Option                                    : TX_DISABLE implemented
	BR margin, max                            : 0%
	BR margin, min                            : 0%
	Vendor SN                                 : 2109150236
	Date code                                 : 210915
	Optical diagnostics support               : Yes
...