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| author | Thangaraj Samynathan <thangaraj.s@microchip.com> | 2026-03-18 09:32:28 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-21 04:50:23 +0300 |
| commit | e783e40fb689381caca31e03d28c39e10c82e722 (patch) | |
| tree | 9d633fe7a1b62683f07f6e3cd8b303acc5016892 /include | |
| parent | 64cf4b95de0741e25a5c1f3140de50149fa68937 (diff) | |
| download | linux-e783e40fb689381caca31e03d28c39e10c82e722.tar.xz | |
net: lan743x: fix SGMII detection on PCI1xxxx B0+ during warm reset
A warm reset on boards using an EEPROM-only strap configuration (where
no MAC address is set in the image) can cause the driver to incorrectly
revert to RGMII mode. This occurs because the ENET_CONFIG_LOAD_STARTED
bit may not persist or behave as expected.
Update pci11x1x_strap_get_status() to use revision-specific validation:
- For PCI11x1x A0: Continue using the legacy check (config load started
or reset protection) to validate the SGMII strap.
- For PCI11x1x B0 and later: Use the newly available
STRAP_READ_USE_SGMII_EN_ bit in the upper strap register to validate
the lower SGMII_EN bit.
This ensures the SGMII interface is correctly identified even after a
warm reboot.
Signed-off-by: Thangaraj Samynathan <thangaraj.s@microchip.com>
Link: https://patch.msgid.link/20260318063228.17110-1-thangaraj.s@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions