[PATCH 2/3] arm64: dts: freescale: imx{91,93}-phycore-som: Adjust PHY RST drive-strength
From: Primoz Fiser
Date: Thu May 07 2026 - 02:50:50 EST
According to measurements, the PHY reset signal shows an overshoot on
the rising edge that exceeds the specified limits (max 2.1V) when using
X4 strength on ENET2_RXC. Reduce drive-strength to X1 to decrease the
overshoot and bring signal within specification limits.
Signed-off-by: Primoz Fiser <primoz.fiser@xxxxxxxxx>
---
arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi | 2 +-
arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi
index 19e7e84ad6f7..8038d92da2aa 100644
--- a/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx91-phycore-som.dtsi
@@ -220,7 +220,7 @@ MX91_PAD_ENET2_TD0__ENET2_RGMII_TD0 0x50e
MX91_PAD_ENET2_TD1__ENET2_RGMII_TD1 0x50e
MX91_PAD_ENET2_TX_CTL__ENET2_RGMII_TX_CTL 0x50e
MX91_PAD_ENET2_TD2__ENET2_TX_CLK2 0x4000050e
- MX91_PAD_ENET2_RXC__GPIO4_IO23 0x51e
+ MX91_PAD_ENET2_RXC__GPIO4_IO23 0x502
>;
};
diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
index 626160132e3c..a624aed48efe 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
@@ -222,7 +222,7 @@ MX93_PAD_ENET2_TD0__ENET1_RGMII_TD0 0x50e
MX93_PAD_ENET2_TD1__ENET1_RGMII_TD1 0x50e
MX93_PAD_ENET2_TX_CTL__ENET1_RGMII_TX_CTL 0x50e
MX93_PAD_ENET2_TD2__ENET1_TX_CLK 0x4000050e
- MX93_PAD_ENET2_RXC__GPIO4_IO23 0x51e
+ MX93_PAD_ENET2_RXC__GPIO4_IO23 0x502
>;
};
--
2.34.1