net: stmmac: dwc-qos: calibrate tegra with mdio bus idle

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Thierry states that there are prerequists for Tegra's calibration
that should be met before starting calibration - both the RGMII and
MDIO interfaces should be idle.

This commit adds the necessary MII bus locking to ensure that the MDIO
interface is idle during calibration.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/E1u7EYR-001ZAS-Cr@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Russell King (Oracle) 2025-04-22 15:24:55 +01:00 • committed by Jakub Kicinski

parent 8ff6175139

commit 87f43e6f06

1 changed files with 10 additions and 2 deletions

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drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c

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