topic Re: iMX8QM MEK input/output GPIO settings in i.MX Processors

iMX8QM MEK input/output GPIO settings

rkohli2000 — Tue, 23 Mar 2021 03:29:14 GMT

Hi support,

I'd like to validate iMX8QM MEK input GPIO pins using uboot-imx (5.4.70_2.3.0).

Can we use FGPIO APIs from uboot-imx ?
Is it possible to read the boot mode dip switch (SW2) pins for this ?
If not SW2, which input GPIO pins on the MEK can be used to test this ? Any examples ?

Thanks in advance.

Ravi

Re: iMX8QM MEK input/output GPIO settings

BiyongSUN — Tue, 23 Mar 2021 04:05:44 GMT

SW2 is not GPIO. it is boot mode pin. not a GPIO.

For the GPIO you can run the gpio command in uboot.

Re: iMX8QM MEK input/output GPIO settings

rkohli2000 — Tue, 30 Mar 2021 18:53:15 GMT

Hi Biyong, Please ignore this comment below. I found the issue. Thanks for the reply.

Regards

Ravi

~~Hi Biyong,~~

~~I'm using uboot-imx_5.4.70_2.3.0 under the imx8QM MEK board. I can see imx8qm_mek_defconfig shows "CONFIG_CMD_GPIO=y". But, there is no gpio supported on the CLI.~~

~~Is it supported in BSP 5.4.70_2.3.0 ? Or any known MEK driver fixes or patch to support the basic command ?~~

~~Thanks.~~

~~BuildInfo:~~
~~- SCFW 0d54291f, SECO-FW d63fdb21, IMX-MKIMAGE b392ccaa, ATF~~
~~- U-Boot 2021.00~~

~~switch to partitions #0, OK~~
~~mmc0(part 0) is current device~~
~~flash target is MMC:0~~
~~Net:~~
~~Warning: ethernet@5b040000 using MAC address from ROM~~
~~eth0: ethernet@5b040000 [PRIME]~~
~~Warning: ethernet@5b050000 using MAC address from ROM~~
~~, eth1: ethernet@5b050000~~
~~Fastboot: Normal~~
~~Normal Boot~~
~~Hit any key to stop autoboot: 0~~
=>
=>
~~=> gpio status~~
~~Unknown command 'gpio' - try 'help'~~
=>