About wifi module issue on imx8mp usdhc1

dskim2 — Mon, 24 Jun 2024 07:33:58 GMT

I am wifi testing with my custorm board.

wifi module is connected to usdhc1 and using 1.8V.

but the information is not correct please see below.

root@imx8mp-lpddr4-evk:~# cat /sys/kernel/debug/mmc1/ios

clock:0 Hz

vdd:0 (invalid)

bus mode:2 (push-pull)

chip select:0 (don't care)

power mode:0 (off)

bus width:0 (1 bits)

timing spec:0 (legacy)

signal voltage:0 (3.30 V)

driver type:0 (driver type B)

yocto version is 6.1.22_2.0.0 and dtb file is imx8mp-evk-usdhc1-m2

how can fix it

Best Regards

Re: About wifi module issue on imx8mp usdhc1

jimmychan — Wed, 26 Jun 2024 08:09:37 GMT

As you can see the regulator voltage is 3.3V, you could change it to 1.8V.