[PATCH v2 2/4] arm64: dts: imx95-evk: add USB3 PHY tuning properties

From: Frank Li
Date: Fri Jun 06 2025 - 15:02:11 EST


From: Xu Yang <xu.yang_2@xxxxxxx>

Add USB3 PHY tuning properties for imx95-15x15-evk and imx95-19x19-evk
boards according to signal measurement results.

Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
change in v2
- none
---
arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts | 3 +++
arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts | 3 +++
2 files changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
index 6c47f4b47356a..e54f3b982127a 100644
--- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
@@ -1070,7 +1070,10 @@ usb3_data_hs: endpoint {

&usb3_phy {
orientation-switch;
+ fsl,phy-pcs-tx-deemph-3p5db-attenuation-db = <17>;
+ fsl,phy-pcs-tx-swing-full-percent = <100>;
fsl,phy-tx-preemp-amp-tune-microamp = <600>;
+ fsl,phy-tx-vboost-level-microvolt = <1156>;
status = "okay";

port {
diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
index 5d85849e867fc..ea70ef4e85690 100644
--- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
@@ -615,7 +615,10 @@ usb3_data_hs: endpoint {
};

&usb3_phy {
+ fsl,phy-pcs-tx-deemph-3p5db-attenuation-db = <17>;
+ fsl,phy-pcs-tx-swing-full-percent = <100>;
fsl,phy-tx-preemp-amp-tune-microamp = <600>;
+ fsl,phy-tx-vboost-level-microvolt = <1156>;
orientation-switch;
status = "okay";

--
2.34.1