Some sdcard identified failed

[Trumany]

@Xzz

before I plug in the sdcard, 3v3 is always high.

Hi, 3V3 supply should not be always ON. You can find the note in Design Guide as below:
The supply or load switch for the SD Card VDD must be enabled with a GPIO from Jetson. This is required for correct operation after a warm boot. The GPIO used should be selected so VDD is not powered on by default.

[Xzz]

Hi,Trumany, thank u for reply,
but I cant find effective way to not powered on 3V3 by default.
Can u help me？

[Xzz]

@Xzz

gpio = <&tegra_aon_gpio TEGRA194_AON_GPIO(CC, 3) 0>;

I try to change the gpio state 0 to 1:

gpio = <&tegra_aon_gpio TEGRA194_AON_GPIO(CC, 3) 1>;

but it doesn’t help.

[Trumany]

@Xzz

gpio = <&tegra_aon_gpio TEGRA194_AON_GPIO(CC, 3) 1>;

Do you mean you use GPIO(CC, 3) to enable 3.3V SD supply? I don’t see the enable design in your schematic.

[Xzz]

I use GPIO06 to control it.

[Xzz]

Hi,can someone help me check this problem?

[Xzz]

Hi,Trumany,
do you have any suggestions ?

[kayccc]

Sorry for the late response, have you managed to get issue resolved or still need the support? Thanks

[Xzz]

Hi, kayccc,
We still need your help.Thank u!

[WayneWWW]

please change your hardware design to always on design. Not sure what goes wrong with previous hardware setting.

[Xzz]

We will check it, thank you!