[PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties

[Xu Yang]

On Mon, Jul 07, 2025 at 04:21:00PM +0800, Shawn Guo wrote:
> On Fri, Jun 27, 2025 at 11:13:48AM +0800, Xu Yang wrote:
> > Add some USB3 PHY tuning properties to imx95-15x15-evk and
> > imx95-19x19-evk boards to improve USB signal quality.
> > 
> > Reviewed-by: Jun Li <jun.li at nxp.com>
> > Signed-off-by: Xu Yang <xu.yang_2 at nxp.com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts | 6 +++++-
> >  arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts | 4 ++++
> >  2 files changed, 9 insertions(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > index 6c47f4b47356..b26e9db7832a 100644
> > --- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > @@ -1069,8 +1069,12 @@ 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>;
> > +	fsl,phy-tx-vref-tune-percent = <100>;
> > +	orientation-switch;
> >  	status = "okay";
> 
> It conflicts with what I applied from Frank [1].
> 
> Shawn
> 
> [1] https://lkml.org/lkml/2025/6/6/920

Well, my bad. I should rebase my tree firstly. I will send another one later.

Thanks,
Xu Yang

> 
> >  
> >  	port {
> > diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > index 6886ea766655..e212f12f869a 100644
> > --- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > @@ -514,7 +514,11 @@ 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>;
> > +	fsl,phy-tx-vref-tune-percent = <100>;
> >  	orientation-switch;
> >  	status = "okay";
> >  
> > -- 
> > 2.34.1
> > 
>