arm64: dts: st: Add I/O sync to eth pinctrl in stm32mp25-pinctrl.dtsi

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On board stm32mp257f-ev1, the propagation delay between eth1/eth2
and the external PHY requires a compensation to guarantee that no
packet get lost in all the working conditions.

Add I/O synchronization properties in pinctrl on all the RGMII
data pins, activating re-sampling on both edges of the clock.

Co-developed-by: Christophe Roullier <christophe.roullier@foss.st.com>
Signed-off-by: Christophe Roullier <christophe.roullier@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251023132700.1199871-13-antonio.borneo@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

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Antonio Borneo 2025-10-23 15:27:00 +02:00 • committed by Alexandre Torgue

parent 22f0ae971c

commit e613ef5c15

1 changed files with 4 additions and 0 deletions

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arch/arm64/boot/dts/st/stm32mp25-pinctrl.dtsi

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