Hi all,
now, I’m working on Xaiver NX, i used sdmmc3 for sd card, and it’s working fine.
but, when it can’t be detect by hot plug in/out, i don’t honw what’s wrong with it.
I used GPIO12(GPIO3_PCC.04) as cd-gpio,
cd-gpios = <&tegra_aon_gpio TEGRA194_AON_GPIO(CC, 4) 0>;
Is sdmmc3 suppurt hot plug in/out?
hello tek.xing,
please share logs, you may enable a terminal with $ dmesg --follow,
please hot plug in/out your SD-card and share the kernel messages,
thanks
hi Jerry,
after demsg --follow, and plug in/out, there is no anything on terminal.
and GPIO12 is always input low when plug in/out.
gpio-268 (GPIO12 |cd ) in lo
hello tek.xing,
just for confirmation,
is this sd-card able to be detected when you keep the card inserted before system boot-up?
thanks
hello tek.xing,
you should review the SD card connections.
please access Jetson Xavier NX Product Design Guide via download center and check the [SD Card and SDIO] chapter. please confirm your hardware connection is correct,
thanks
Please refer to this post.
Yes, i’ve done follow it as above picture at last.it’s can’t be detect via hot plug in/out.
Only hotplug case fails or even non-hotplug case fails too?
Do you see that gpio under /sys/kernel/debug/gpio?
Only hotplug failed, when i plugin sdcard before power on,it can be detected and working fine.
sudo cat /sys/kernel/debug/gpio | grep -i cd
gpio-268 (GPIO12 |cd ) in lo
Do you see this GPIO state in /sys/kernel/debug/gpio change when you hotplug the card?
No anything change,GPIO12 is always input low when plug in/out.i think it’s the hw issue and i’ll measure GPIO12’s signal.
I would like to know the settings are ok in dts?
I think you can measure the GPIO state first.