Hello, I’m trying to use MicroSD on a custom carrier board. The circuit diagram is shown in the picture below. Are there any fixes related to DTB? CD (Card Detector) is used together with FAN_TACH, but there is concern about interference. Advice please [image] Thank you.

You should measure the cd gpio level first and see if it gets toggled when you insert the sdcard.

You didn’t enable sdhci controller in your DT at all. Check your dmesg and search keyword “dts”. It will teach you which file you need to modify and overwrite… Honestly, you have been working on jetson nano for almost one year, this is the basic one and you should’ve already learned it…

Hello, Okay. I think so too. But I’m not used to it. I modified the same as below and compiled the kernel, but why didn’t it apply? [image] MicroSD card not detected on Jetson Nano production module Jetson Nano Hi WayneWWW, I did not yet implement auto-mount…

Depends on how did you flash it to your board

Hello, dmesg2.txt (66.4 KB) Edit the contents of the file as in the following article. [image] MicroSD card not detected on Jetson Nano production module Jetson Nano Hi WayneWWW, I did not yet implement auto-mount-sd-card-on-startup by changing fstab. I plan…

Did you ever put your modifed dtb to the Linux_For_Tegra folder?

Hello, The contents of dmesg have changed a bit. dmesg3.txt (124.6 KB) Thank you.

Please use dtc tool to convert your dtb back to dts and check if it is really as your modifications. You can google search how to use dtc command.

Hello, The contents of dmesg have changed, can you please check it? This is dmesg3.txt attached above. Thank you.

Share the full dmesg, dts and which software release you are using.

I'm trying to use MicroSD on a custom carrier board

Robotics & Edge Computing Jetson Systems Jetson Nano

forumuser July 26, 2021, 6:25am 19

Hello,

yes.
cp tegra210-p3448-0002-p3449-0000-b00.dtb /Linux_for_Tegra/kernel/dtb

Thank you.

Error -84 whilst initialising SD CARD in Jetson Nano EMMC custom board

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I'm trying to use MicroSD on a custom carrier board

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