Jp 5.0.2 SD card enable on NX

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

Hi,

I have enabled the sd card on Jp4.6.2 on our carrier board

And I modified the same dts on Jp5.0.2 but not works

Even more, there’s no screen show up on monitor

I connect the uart debug port and notice that there’s some failed message may cause no screen

I can login in the system by minicom

But I have no idea how to fix it

I have check this gpio pin in Jp5.0.2 dts, and no one use

Attach is the dts I modified

image
image1532×359 42.4 KB

And the uart logs and dmesg
debug .txt (92.3 KB)
dmesg.txt (87.7 KB)

I also tried to modified the default dtb flashing by sdkm

Using dtc tool and only change sdhci@3440000 status to okay

That will be fine for boot and the uart log will not show failed

In this case, only if I insert the sd card before boot, or it won’t be seen

And even if I can see the sdhci@3440000 in dmesg and I can see the sd card mount

I can’t normally hot plugging

If I eject the sd card, it didn’t disappear in system

And if I umount the sd card, the system will crash and uart shows

“end Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt”

3

Could you start from the pure dtb without any change and see if these gpio errors are still there?

[ 11.295862] requesting hog GPIO wifi-enable (chip tegra194-gpio, offset 39) failed, -517
[ 11.296024] gpiochip_add_data_with_key: GPIOs 305…473 (tegra194-gpio) failed to register, -517
[ 11.484549] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 11.484954] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 11.486742] tegra186-gpio 2200000.gpio: Failed to set output direction: -517
[ 11.486910] gpio gpiochip2: (tegra194-gpio): setup of own GPIO wifi-enable failed
[ 11.487057] requesting hog GPIO wifi-enable (chip tegra194-gpio, offset 39) failed, -517
[ 11.487213] gpiochip_add_data_with_key: GPIOs 305…473 (tegra194-gpio) failed to register, -517
[ 11.489689] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 11.490515] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 11.501649] tegra186-gpio 2200000.gpio: Failed to set output direction: -517

Also, please build the dtb from source code instead of dtc tool.

4

Hi

The default image flashed by sdkm shows no gpio error

I have check that modify the property belowed cause the error appears
cd-gpios = <&tegra_main_gpio TEGRA194_MAIN_GPIO(Q, 2) 0>;

But it didn’t show error when I modify this property on J4.6.2 with the same board

Attach is the pure uart logs and dmesg
debug.txt (84.4 KB)
dmesg.txt (85.5 KB)

5

Just want to clarify, are you trying to put “<&tegra_main_gpio TEGRA194_MAIN_GPIO(Q, 2) 0>;” to the dts file that converts back from dtb with dtc tool?

6

No, I build the source code to add this property

and the source dts I add

7

Hi,

One weird try here. If you don’t configure Q2 here but other gpio, will the gpio error still there when boot up?

8

I check our board design and Q2 is the pin detect

image
image1081×753 64.1 KB

image
image1738×291 51.5 KB

I will try to set other unused gpio

9

Hi
I have tried the Y7 for unused gpio, but the error log still there

Attach files
debug_Y7.txt (93.3 KB)
dmesg_Y7.txt (86.7 KB)

The upper connector is just a level shift, this pin is not used

image
image1070×974 73.3 KB

10

So if you removed “cd-gpios”, then that gpio error would be gone?

11

Yes, I have tried that before

12

Just to confirm, I am talking about these errors.

[ 12.607567] requesting hog GPIO wifi-enable (chip tegra194-gpio, offset 39) failed, -517
[ 12.607796] gpiochip_add_data_with_key: GPIOs 305…473 (tegra194-gpio) failed to register, -517
[ 12.661441] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 12.664565] tegra186-gpio c2f0000.gpio: Failed to set output direction: -517
[ 12.682006] tegra186-gpio 2200000.gpio: Failed to set output direction: -517

13

Yes, I have tried add and not add “cd-gpios” property

The error log will be disappeared when I just not add that property

14

Could you upload your finalized dts file that converted back from dtb here?

15

Here are the dtb and dts

kernel_tegra194-p3668-0001-p3509-0000.dtb (247.4 KB)
kernel_tegra194-p3668-0001-p3509-0000.dts (304.9 KB)

16

Hi,

I mean the one with cd-gpios added. Seems not the one you shared.

17

Hi

Sorry for my misunderstanding

If you mean the dts converted from the dtb

I didn’t add cd-gpios to dts file that converted from the dtb

I just build the source dts and flash it to device by command
sudo ./flash.sh -k kernel-dtb jetson-xavier-nx-devkit-emmc mmcblk0p1

Here is the dts located at hardware/nvidia/platform/t19x/jakku/kernel-dts where I modified cd-gpios:
tegra194-p3668-all-p3509-0000.dts (1.2 KB)

If I still misunderstand what you mean, please feel free let me know

18

Yes, you are still misunderstanding…

What I am saying is, after you build the dts to dtb by building source dts, there would be a finalized dtb file…
Please convert that dtb file back to dts and directly attach it here.

19

Hi

For ease of reading, the tegra194-p3668-0001-p3509-0000.dtb simplify to X, kernel_tegra194-p3668-0001-p3509-0000.dtb simplify to Y

The Y I shared is from the L4T/bootloader and it is as same as the X from the L4T/kernel/dtb by the command

And there’s another X under L4T/bootloader different from the X under L4T/kernel/dtb

image
image1852×124 46.7 KB

I’m understand you want the dtb is the X under L4T/kernel/dtb, because after I build the source dts, I copy the dtb to kernel/dtb

So, what I can share is the dtb above,or the different X I don’t know what it is under L4T/bootloader

list:
bootloader:
tegra194-p3668-0001-p3509-0000.dtb (268.4 KB)
tegra194-p3668-0001-p3509-0000.dts (305.0 KB)

kernel_tegra194-p3668-0001-p3509-0000.dtb (247.4 KB)
kernel_tegra194-p3668-0001-p3509-0000.dts (304.9 KB)

kernel/dtb
tegra194-p3668-0001-p3509-0000.dtb (247.4 KB)
tegra194-p3668-0001-p3509-0000.dts (304.9 KB)

Sorry for my comprehension

20

Please try to do full flash instead of only flashing kernel-dtb. This will align those two dtbs to the same.

21

Hi,

After doing full flash, those two dtbs under bootloader still not align

I have check it will align on Jp4.6.2 by doing full flash before, but it seems not work on Jp5.0.2

Attach files:
kernel_tegra194-p3668-0001-p3509-0000.dtb (247.4 KB)
kernel_tegra194-p3668-0001-p3509-0000.dts (304.9 KB)

tegra194-p3668-0001-p3509-0000.dtb (256.4 KB)
tegra194-p3668-0001-p3509-0000.dts (305.0 KB)