PCIe x16 supply not enabled on Development Kit

Hello,

I’m trying to use a PCIe card with the AGX Orin Developer Kit.

The problem is that the 3.3V and 12V power supplies are not enabled after inserting a card. Only the 3V3AUX supply is active.

Now, I was able to enable the power supplies by updating the device tree file tegra234-p3737-fixed-regulator.dtsi as follows:

• remove the flag “regulator-boot-on” for the nodes p3737_vdd_3v3_pcie and p3737_vdd_12v_pcie
  


• 
  p3737_vdd_3v3_pcie: change the gpio pin value to TEGRA234_MAIN_GPIO(H, 4)
  

Is this a known issue?

Thanks,

Ralf