With these two parameters tuning, it can pass USB eye diagram at evk board. Reviewed-by: Jun Li <jun.li@xxxxxxx> Signed-off-by: Peter Chen <peter.chen@xxxxxxx> --- Changes for v3: - Using the new property name Changes for v2 - Address Shawn's comment to change subject. arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts index 0f1d7f8aeac4..7c652b898114 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts @@ -324,6 +324,8 @@ srp-disable; adp-disable; usb-role-switch; + samsung,picophy-pre-emp-curr-control = <3>; + samsung,picophy-dc-vol-level-adjust = <7>; status = "okay"; port { -- 2.17.1