linux-kernel - Re: [PATCH 2/3] arm64: dts: imx95-15x15-evk: fix the overshoot issue of NETC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aDcm0QC4PMEEZzX1@lizhi-Precision-Tower-5810>
Date: Wed, 28 May 2025 11:08:01 -0400
From: Frank Li <Frank.li@....com>
To: Wei Fang <wei.fang@....com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: imx95-15x15-evk: fix the overshoot issue
 of NETC

On Wed, May 28, 2025 at 04:34:32PM +0800, Wei Fang wrote:
> The overshoot of MDIO, MDC, ENET1_TDx and ENET2_TDx is too high, so
> reduce the drive strength of these pins.
>
> Fixes: e3e8b199aff8 ("arm64: dts: imx95: Add imx95-15x15-evk support")
> Signed-off-by: Wei Fang <wei.fang@....com>

Reviewed-by: Frank Li <Frank.Li@....com>

> ---
>  .../boot/dts/freescale/imx95-15x15-evk.dts    | 20 +++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> index 6c47f4b47356..9f4d0899a94d 100644
> --- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> @@ -574,17 +574,17 @@ &sai3 {
>  &scmi_iomuxc {
>  	pinctrl_emdio: emdiogrp {
>  		fsl,pins = <
> -			IMX95_PAD_ENET2_MDC__NETCMIX_TOP_NETC_MDC		0x57e
> -			IMX95_PAD_ENET2_MDIO__NETCMIX_TOP_NETC_MDIO		0x97e
> +			IMX95_PAD_ENET2_MDC__NETCMIX_TOP_NETC_MDC		0x50e
> +			IMX95_PAD_ENET2_MDIO__NETCMIX_TOP_NETC_MDIO		0x90e
>  		>;
>  	};
>
>  	pinctrl_enetc0: enetc0grp {
>  		fsl,pins = <
> -			IMX95_PAD_ENET1_TD3__NETCMIX_TOP_ETH0_RGMII_TD3		0x57e
> -			IMX95_PAD_ENET1_TD2__NETCMIX_TOP_ETH0_RGMII_TD2		0x57e
> -			IMX95_PAD_ENET1_TD1__NETCMIX_TOP_ETH0_RGMII_TD1		0x57e
> -			IMX95_PAD_ENET1_TD0__NETCMIX_TOP_ETH0_RGMII_TD0		0x57e
> +			IMX95_PAD_ENET1_TD3__NETCMIX_TOP_ETH0_RGMII_TD3		0x50e
> +			IMX95_PAD_ENET1_TD2__NETCMIX_TOP_ETH0_RGMII_TD2		0x50e
> +			IMX95_PAD_ENET1_TD1__NETCMIX_TOP_ETH0_RGMII_TD1		0x50e
> +			IMX95_PAD_ENET1_TD0__NETCMIX_TOP_ETH0_RGMII_TD0		0x50e
>  			IMX95_PAD_ENET1_TX_CTL__NETCMIX_TOP_ETH0_RGMII_TX_CTL	0x57e
>  			IMX95_PAD_ENET1_TXC__NETCMIX_TOP_ETH0_RGMII_TX_CLK	0x58e
>  			IMX95_PAD_ENET1_RX_CTL__NETCMIX_TOP_ETH0_RGMII_RX_CTL	0x57e
> @@ -598,10 +598,10 @@ IMX95_PAD_ENET1_RD3__NETCMIX_TOP_ETH0_RGMII_RD3		0x57e
>
>  	pinctrl_enetc1: enetc1grp {
>  		fsl,pins = <
> -			IMX95_PAD_ENET2_TD3__NETCMIX_TOP_ETH1_RGMII_TD3		0x57e
> -			IMX95_PAD_ENET2_TD2__NETCMIX_TOP_ETH1_RGMII_TD2		0x57e
> -			IMX95_PAD_ENET2_TD1__NETCMIX_TOP_ETH1_RGMII_TD1		0x57e
> -			IMX95_PAD_ENET2_TD0__NETCMIX_TOP_ETH1_RGMII_TD0		0x57e
> +			IMX95_PAD_ENET2_TD3__NETCMIX_TOP_ETH1_RGMII_TD3		0x50e
> +			IMX95_PAD_ENET2_TD2__NETCMIX_TOP_ETH1_RGMII_TD2		0x50e
> +			IMX95_PAD_ENET2_TD1__NETCMIX_TOP_ETH1_RGMII_TD1		0x50e
> +			IMX95_PAD_ENET2_TD0__NETCMIX_TOP_ETH1_RGMII_TD0		0x50e
>  			IMX95_PAD_ENET2_TX_CTL__NETCMIX_TOP_ETH1_RGMII_TX_CTL	0x57e
>  			IMX95_PAD_ENET2_TXC__NETCMIX_TOP_ETH1_RGMII_TX_CLK	0x58e
>  			IMX95_PAD_ENET2_RX_CTL__NETCMIX_TOP_ETH1_RGMII_RX_CTL	0x57e
> --
> 2.34.1
>