linux-kernel - [PATCH net-next v2 2/2] net: phy: microchip_t1s:: add cable diagnostic support for LAN867x Rev.D0

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Message-ID: <20251104102842.64519-3-parthiban.veerasooran@microchip.com>
Date: Tue, 4 Nov 2025 15:58:42 +0530
From: Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>
To: <Parthiban.Veerasooran@...rochip.com>, <piergiorgio.beruto@...il.com>,
	<andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, "Parthiban
 Veerasooran" <parthiban.veerasooran@...rochip.com>
Subject: [PATCH net-next v2 2/2] 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@...rochip.com>
---
 drivers/net/phy/microchip_t1s.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/phy/microchip_t1s.c b/drivers/net/phy/microchip_t1s.c
index bce5cf087b19..dd3de712c9d4 100644
--- a/drivers/net/phy/microchip_t1s.c
+++ b/drivers/net/phy/microchip_t1s.c
@@ -573,6 +573,9 @@ 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),
-- 
2.34.1