Pcie is not detecting in jetson tx2 with L4T 32.6.1 BSP

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

pcie is not detecting in jetson tx2 with L4T 32.6.1 BSP, where as same is detected in L4T 32.3.1

2

May I know what’ the PCIE device you used?
Are you using own designed carrier board ot devkit?

3

Hi Kayccc,

Thank you for the response.
I’m using PCIE based Wi-Fi device and I’m using devkit.

On L4T 32.3.1 with same Jetson-tx2 devkit PCIE will detect but it won’t detect on l4t 32.6.1

Please find the logs below

[ 0.462484] GPIO line 459 (pcie0_lane2_mux) hogged as output/low
[ 0.468291] iommu: Adding device 10003000.pcie-controller to group 50
[ 0.468305] arm-smmu: forcing sodev map for 10003000.pcie-controller
[ 1.021888] tegra-pcie 10003000.pcie-controller: 4x1, 1x1 configuration
[ 1.022866] tegra-pcie 10003000.pcie-controller: PCIE: Enable power rails
[ 1.023207] tegra-pcie 10003000.pcie-controller: probing port 0, using 4 lanes
[ 1.125426] tegra-pcie 10003000.pcie-controller: probing port 2, using 1 lanes
[ 1.671757] tegra-pcie 10003000.pcie-controller: link 0 down, retrying
[ 2.079711] tegra-pcie 10003000.pcie-controller: link 0 down, retrying
[ 2.489774] tegra-pcie 10003000.pcie-controller: link 0 down, retrying
[ 2.491804] tegra-pcie 10003000.pcie-controller: link 0 down, ignoring
[ 2.897759] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[ 3.309768] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[ 3.710309] tegra-pcie 10003000.pcie-controller: link 2 down, retrying
[ 3.712823] tegra-pcie 10003000.pcie-controller: link 2 down, ignoring
[ 3.920196] tegra-pcie 10003000.pcie-controller: PCIE: no end points detected
[ 3.920482] tegra-pcie 10003000.pcie-controller: PCIE: Disable power rails

Thanks,

4

Is it using the M.2 key E slot on the TX2 devkit?

5

yes its M.2 key E slot.

6

It is a little bit weird that we do have patch to “enable wifi” but we don’t have patch to disable it.

Could you also check rel-32.4.3 and rel-32.5.1 and see which BSP started to disable your wifi?

7

Sure WayneWWW
Thank you so much for the information. I’ll check and keep you posted.

Thanks,

8

Hi WayneWWW,

Can you please let me know the patch which is use to enable wifi.

I have tried with rel-32.4.3 but image is not booting up. now I’m trying with rel-32.5.1

9

That patch was for NX, not for TX2. Actually we don’t have any patch on TX2 for this.

That patch was to enable w-disable1 and w-disable2 gpio for the AC8265 wifi chip.

10

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