* [PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties
@ 2025-06-27 3:13 Xu Yang
2025-07-07 8:21 ` Shawn Guo
0 siblings, 1 reply; 3+ messages in thread
From: Xu Yang @ 2025-06-27 3:13 UTC (permalink / raw)
To: robh, krzk+dt, conor+dt, shawnguo, s.hauer, kernel, festevam
Cc: devicetree, imx, linux-arm-kernel, jun.li
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@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@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";
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
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties
2025-06-27 3:13 [PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties Xu Yang
@ 2025-07-07 8:21 ` Shawn Guo
2025-07-07 9:00 ` Xu Yang
0 siblings, 1 reply; 3+ messages in thread
From: Shawn Guo @ 2025-07-07 8:21 UTC (permalink / raw)
To: Xu Yang, Frank Li
Cc: robh, krzk+dt, conor+dt, shawnguo, s.hauer, kernel, festevam,
devicetree, imx, linux-arm-kernel, jun.li
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@nxp.com>
> Signed-off-by: Xu Yang <xu.yang_2@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
>
> 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
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties
2025-07-07 8:21 ` Shawn Guo
@ 2025-07-07 9:00 ` Xu Yang
0 siblings, 0 replies; 3+ messages in thread
From: Xu Yang @ 2025-07-07 9:00 UTC (permalink / raw)
To: Shawn Guo
Cc: Frank Li, robh, krzk+dt, conor+dt, shawnguo, s.hauer, kernel,
festevam, devicetree, imx, linux-arm-kernel, jun.li
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@nxp.com>
> > Signed-off-by: Xu Yang <xu.yang_2@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
> >
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2025-06-27 3:13 [PATCH] arm64: dts: imx95: add some USB3 PHY tuning properties Xu Yang
2025-07-07 8:21 ` Shawn Guo
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