TX2 JetPack4.6 F20 not read low level

Autonomous Machines Jetson & Embedded Systems Jetson TX2
#1

Hi everyone,
I use TX2 installed Jetpack4.6 I set F20 pin SDCARD_WP as input pin, but read data always high even the pin connect to gound. The pin mux in dts as below, how to fix this issue? thanks.

pinmux@2430000 {
    gpio_edp1_pp4 { // TODO
        nvidia,pins = "gpio_edp1_pp4";
        nvidia,function = "rsvd0";
        nvidia,pull = <TEGRA_PIN_PULL_NONE>;
        nvidia,tristate = <TEGRA_PIN_DISABLE>;
        nvidia,enable-input = <TEGRA_PIN_ENABLE>;
        nvidia,lpdr = <TEGRA_PIN_DISABLE>;
    };
};
#3

hello kenny_234,

please access Jetson TX2 Series OEM Product Design Guide, and check [Figure 36. SD Card Socket Connection Example] to review the pin connection diagram.

#5

Hi Jerry,
I found that the D00 revision tx2 module works well, but D02 revision tx2 module can’t read low level. Are there any differences between the two modules? Thanks.

#8

What do you mean the D00 and D02 module? Can you share a photo of two modules with part number?