net: phy: add generic helpers for direct C45 MMD access

Some PHYs support direct C45 register access but not C22 indirect MMD
access (registers 0xD and 0xE). When discovered via C22, phylib routes
MMD access through the indirect path, which won't work on these
devices.

Add genphy_read_mmd_c45() and genphy_write_mmd_c45() as read_mmd/
write_mmd callbacks that bypass the C22 indirect path and use the bus
C45 accessors directly.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Ciprian Regus <ciprian.regus@analog.com>
Link: https://patch.msgid.link/20260708-adin1140-driver-v5-10-4aca7b51a58b@analog.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions