net: phy: microchip_t1s:: add cable diagnostic support for LAN867x Rev.D0

Enable Open Alliance TC14 (OATC14) 10Base-T1S cable diagnostic feature
for Microchip LAN867x Rev.D0 PHY by implementing `cable_test_start` and
`cable_test_get_status` using the generic C45 functions. This allows the
`ethtool` utility to perform cable diagnostic tests directly on the PHY,
improving network troubleshooting and maintenance.

Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
Link: https://patch.msgid.link/20251105051213.50443-3-parthiban.veerasooran@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/phy/microchip_t1s.c b/drivers/net/phy/microchip_t1s.c
index bce5cf087b194f29716b73c131b09bd91291b98a..5a0a667789770cad102f0bdadc5c5acbe78a733d 100644 (file)
--- a/drivers/net/phy/microchip_t1s.c
+++ b/drivers/net/phy/microchip_t1s.c
@@ -573,6 +573,8 @@ static struct phy_driver microchip_t1s_driver[] = {
                .get_plca_cfg       = genphy_c45_plca_get_cfg,
                .set_plca_cfg       = lan86xx_plca_set_cfg,
                .get_plca_status    = genphy_c45_plca_get_status,
+               .cable_test_start   = genphy_c45_oatc14_cable_test_start,
+               .cable_test_get_status = genphy_c45_oatc14_cable_test_get_status,
        },
        {
                PHY_ID_MATCH_EXACT(PHY_ID_LAN865X_REVB),