eNET pins gets no voltage

ajita02 — Mon, 21 Oct 2024 11:57:44 GMT

Hi all,

I am using IMX8MM with 5.4.70 kernel version. I am trying to toggle ENET_TD2, ENET_RD2, ENET_RD3 as general gpios. I have configured them as

pinctrl_temp: temp2 { fsl,pins = < MX8MM_IOMUXC_ENET_RD2_GPIO1_IO28 0x00000140 MX8MM_IOMUXC_ENET_RD3_GPIO1_IO29 0x00000160 MX8MM_IOMUXC_ENET_TD2_GPIO1_IO19 0x00000160 >; };

below. When I try to toggle them through "/sys/class/gpio" but no voltage variation on pins. While I configure to use NAND_CE0_B as follow

pinctrl_gpio_led1: gpioledgrp1 { fsl,pins = < MX8MM_IOMUXC_NAND_CE0_B_GPIO3_IO1 0x140 >; };

I able to see toggle voltages on oscilloscope. My toggle script is as follow:

#!/bin/bash echo "Performing GPIO PIN configuration" cd /sys/class/gpio # Set gpios echo 28 > export echo 19 > export echo 29 > export echo 65 > export echo out > gpio28/direction echo out > gpio19/direction echo out > gpio65/direction echo out > gpio29/direction while true; do echo "Enabling Reset low" echo 0 > gpio28/value echo 0 > gpio19/value echo 0 > gpio29/value echo 0 > gpio65/value sleep 1 echo "Enabling Reset high" echo 1 > gpio28/value echo 1 > gpio19/value echo 1 > gpio29/value echo 1 > gpio65/value sleep 1 done

Can someone help me with this?

#IMX8MM #GPIO #IMX8

Thanks,

Ajita

Re: eNET pins gets no voltage

Bio_TICFSL — Tue, 22 Oct 2024 13:57:22 GMT

Hello,

You better try the 6.6.36 BSP since the enet in this version change is better to have the latest one.

Regards

topic Re: eNET pins gets no voltage in i.MX Processors

eNET pins gets no voltage

Re: eNET pins gets no voltage