Does SDCARD_WP enable in R32.1

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
1

HI Sir/Madam,

I look into the documents, the sd card write protection pin is GPIO29 and is configured to “SDMMC1_WP”.
Since Xavier kit just only has microSD without WP pin, just want to make sure does SDCARD_WP enable by default configuration?
Or which device tree or pinmux settings I need to check?

PS: Our custom board has SD card with WP pin.

Thank you
Best Regards,
Jason

2

I think you need to add “wp-gpios” in device tree.

You could refer to “tegra186-quill-common.dtsi” ->sdhci@3400000

3

Hi WayneWWW,

Thank you, WayneWWW.

One more question, how do I verify that pinmuxs of GPIO29(soc_gpio31_ps6) is to be set to “SDMMC1_WP” and GPIO02(soc_gpio11_pg7) is to be set to “SDMMC1_CD”

I have ckecked the following two cfg but two different results. Which one is correct and which one I need to modify?

tegra19x-mb1-pinmux-p2888-0000-p2822-0000.cfg

pinmux.0x02431010 = 0x00000458; # soc_gpio31_ps6: pull-up, tristate-enable, input-enable
pinmux.0x02434088 = 0x00000459; # soc_gpio11_pg7: sdmmc1, pull-up, tristate-enable, input-enable

tegra19x-mb1-pinmux-p2888-0000-a04-p2822-0000-b01.cfg

pinmux.0x02431010 = 0x00000459; # soc_gpio31_ps6: sdmmc1, pull-up, tristate-enable, input-enable, lpdr-disable
pinmux.0x02434088 = 0x00000050; # soc_gpio11_pg7: rsvd0, tristate-enable, input-enable, lpdr-disable

Thanks

4

The flash config would tell you which file it is using.

/Linux_for_Tegra$ cat jetson-xavier.conf

#!/bin/bash

# Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
#
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# modification, are permitted provided that the following conditions
# are met:
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#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#  * Neither the name of NVIDIA CORPORATION nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# p2972-0000-devkit.conf: configuration for T194 Silicon

source "${LDK_DIR}/p2972-0000.conf.common";
<b>PINMUX_CONFIG="tegra19x-mb1-pinmux-p2888-0000-a04-p2822-0000-b01.cfg";</b>