kernel/linux.git/drivers/net/phy/microchip_t1s.c, branch linux-7.1.y

net: phy: microchip_t1s: add SQI support for LAN867x Rev.D0 PHYs

2025-12-01T23:08:24+00:00

Add support for Signal Quality Index (SQI) reporting in the Microchip T1S PHY driver for LAN867x Rev.D0 (OATC14-compliant) PHYs. This patch registers the following callbacks in the microchip_t1s driver structure: - .get_sqi - returns the current SQI value - .get_sqi_max - returns the maximum SQI value This enables ethtool to report the SQI value for LAN867x Rev.D0 PHYs. Signed-off-by: Parthiban Veerasooran Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20251201032346.6699-3-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

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

2025-11-08T02:52:33+00:00

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 Link: https://patch.msgid.link/20251105051213.50443-3-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: configure link status control for LAN867x Rev.D0

2025-10-31T23:52:06+00:00

Configure the link status in the Link Status Control register for LAN8670/1/2 Rev.D0 PHYs, depending on whether PLCA or CSMA/CD mode is enabled. When PLCA is enabled, the link status reflects the PLCA status. When PLCA is disabled (CSMA/CD mode), the PHY does not support autonegotiation, so the link status is forced active by setting the LINK_STATUS_SEMAPHORE bit. The link status control is configured: - During PHY initialization, for default CSMA/CD mode. - Whenever PLCA configuration is updated. This ensures correct link reporting and consistent behavior for LAN867x Rev.D0 devices. Signed-off-by: Parthiban Veerasooran Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20251030102258.180061-3-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: add support for Microchip LAN867X Rev.D0 PHY

2025-10-31T23:52:05+00:00

Add support for the LAN8670/1/2 Rev.D0 10BASE-T1S PHYs from Microchip. The new Rev.D0 silicon requires a specific set of initialization settings to be configured for optimal performance and compliance with OPEN Alliance specifications, as described in Microchip Application Note AN1699 (Revision G, DS60001699G – October 2025). https://www.microchip.com/en-us/application-notes/an1699 Signed-off-by: Parthiban Veerasooran Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20251030102258.180061-2-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: Constify struct mdio_device_id

2025-01-14T23:01:32+00:00

'struct mdio_device_id' is not modified in these drivers. Constifying these structures moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 27014 12792 0 39806 9b7e drivers/net/phy/broadcom.o After: ===== text data bss dec hex filename 27206 12600 0 39806 9b7e drivers/net/phy/broadcom.o Signed-off-by: Christophe JAILLET Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/403c381b7d9156b67ad68ffc44b8eee70c5e86a9.1736691226.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: configure collision detection based on PLCA mode

2024-10-11T22:54:40+00:00

As per LAN8650/1 Rev.B0/B1 AN1760 (Revision F (DS60001760G - June 2024)) and LAN8670/1/2 Rev.C1/C2 AN1699 (Revision E (DS60001699F - June 2024)), under normal operation, the device should be operated in PLCA mode. Disabling collision detection is recommended to allow the device to operate in noisy environments or when reflections and other inherent transmission line distortion cause poor signal quality. Collision detection must be re-enabled if the device is configured to operate in CSMA/CD mode. Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20241010082205.221493-8-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: add support for Microchip's LAN867X Rev.C2

2024-10-11T22:54:40+00:00

Add support for LAN8670/1/2 Rev.C2 as per the latest configuration note AN1699 released (Revision E (DS60001699F - June 2024)) for Rev.C1 is also applicable for Rev.C2. Refer hardware revisions list in the latest AN1699 Revision E (DS60001699F - June 2024). https://www.microchip.com/en-us/application-notes/an1699 Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20241010082205.221493-7-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: add support for Microchip's LAN867X Rev.C1

2024-10-11T22:54:39+00:00

Add support for LAN8670/1/2 Rev.C1 as per the latest configuration note AN1699 released (Revision E (DS60001699F - June 2024)). https://www.microchip.com/en-us/application-notes/an1699 Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20241010082205.221493-6-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: move LAN867X reset handling to a new function

2024-10-11T22:54:39+00:00

Move LAN867X reset handling code to a new function called lan867x_check_reset_complete() which will be useful for the next patch which also uses the same code to handle the reset functionality. Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20241010082205.221493-5-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski

net: phy: microchip_t1s: add support for Microchip's LAN865X Rev.B1

2024-10-11T22:54:39+00:00

Add support for LAN8650/1 Rev.B1. As per the latest configuration note AN1760 released (Revision F (DS60001760G - June 2024)) for Rev.B0 is also applicable for Rev.B1. Refer hardware revisions list in the latest AN1760 Revision F (DS60001760G - June 2024). https://www.microchip.com/en-us/application-notes/an1760 Signed-off-by: Parthiban Veerasooran Link: https://patch.msgid.link/20241010082205.221493-4-parthiban.veerasooran@microchip.com Signed-off-by: Jakub Kicinski