Jetson AGX Orin board not able to enumerate FPGA PCIe card (Latest kernel 35.1.0)

Hi NV support team,

I have one FPGA board with PCIe x 8 Gen3 design. I have tested the FPGA board PCIe design on Gigabyte and Supermicro motherboard. Both motherboard able to enumerate PCIe x8 Gen3 speed and work normally.

But when I plug the FPGA board to Jetson AGX Orin PCIe x16 connector, Jetson is not able to detect it. I found that the +12V supply on the connector is not available after booting up. After going thru the forum search, I try to follow this link SOLUTION/TUTORIAL: Jetson ORIN Enabling PCIE power to change the device tree settings.

• p3737_vdd_3v3_pcie: regulator@105 - Remove the flag “regulator-boot-on” and change the pin to TEGRA234_MAIN_GPIO(H, 4)


• p3737_vdd_12v_pcie: regulator@114 - Remove the flag “regulator-boot-on”
  
  2.2) Find the file tegra234-p3737-pcie.dtsi, it is in ./Linux_for_Tegra/source/public/hardware/nvidia/platform/t23x/concord/kernel-dts/cvb

pcie_ep@141a0000 - Replace the nvidia,refclk-select-gpios = <&tegra_aon_gpio TEGRA234_AON_GPIO(AA, 4) GPIO_ACTIVE_HIGH>; with the nvidia,refclk-select-gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(Q, 4) GPIO_ACTIVE_HIGH>;

I rebuilt the latest linux kernel and DTB with the above changes successfully. I reflash the Orin board using commandline and succeeded in flashing as well.

This time when I power up the Orin board, the PCIe 12V and 3.3V supply is available after booting up. Both supply did not go away, it means the device tree changes works. But Orin board still not able to enumerate the FPGA board. Looking at the dmesg msg, I found this error “Failed to get slot regulators” and “Phy link never came up”. May I know how to solve the problem? The FPGA PCIe interface is working on both motherboard. I have uploaded the whole dmesg log.

[ 7.511955] tegra194-pcie 14100000.pcie: Adding to iommu group 10

[ 7.524022] tegra194-pcie 14100000.pcie: Using GICv2m MSI allocator

[ 7.531128] tegra194-pcie 14160000.pcie: Adding to iommu group 11

[ 7.542520] tegra194-pcie 14160000.pcie: Using GICv2m MSI allocator

[ 7.549447] tegra194-pcie 141a0000.pcie: Adding to iommu group 12

[ 7.560563] tegra194-pcie 141a0000.pcie: Using GICv2m MSI allocator

[ 7.567056] tegra194-pcie 141a0000.pcie: Failed to get slot regulators: -517

[ 9.837596] tegra194-pcie 14100000.pcie: Using GICv2m MSI allocator

[ 9.847532] tegra194-pcie 14100000.pcie: host bridge /pcie@14100000 ranges:

[ 9.859430] tegra194-pcie 14100000.pcie: IO 0x0030100000…0x00301fffff → 0x0030100000

[ 9.871813] tegra194-pcie 14100000.pcie: MEM 0x20a8000000…0x20afffffff → 0x0040000000

[ 9.880510] tegra194-pcie 14100000.pcie: MEM 0x2080000000…0x20a7ffffff → 0x2080000000

[ 9.998401] tegra194-pcie 14100000.pcie: Link up

[ 10.004171] tegra194-pcie 14100000.pcie: PCI host bridge to bus 0001:00

[ 10.186777] pcieport 0001:00:00.0: Adding to iommu group 10

[ 10.221738] pcieport 0001:00:00.0: PME: Signaling with IRQ 51

[ 10.227959] pcieport 0001:00:00.0: AER: enabled with IRQ 51

[ 10.234560] tegra194-pcie 14160000.pcie: Using GICv2m MSI allocator

[ 10.246503] tegra194-pcie 14160000.pcie: host bridge /pcie@14160000 ranges:

[ 10.253686] tegra194-pcie 14160000.pcie: IO 0x0036100000…0x00361fffff → 0x0036100000

[ 10.262396] tegra194-pcie 14160000.pcie: MEM 0x2428000000…0x242fffffff → 0x0040000000

[ 10.271093] tegra194-pcie 14160000.pcie: MEM 0x2140000000…0x2427ffffff → 0x2140000000

[ 11.386882] tegra194-pcie 14160000.pcie: Phy link never came up

[ 11.393046] tegra194-pcie 14160000.pcie: PCI host bridge to bus 0004:00

[ 11.468275] pcieport 0004:00:00.0: Adding to iommu group 11

[ 11.474264] pcieport 0004:00:00.0: PME: Signaling with IRQ 53

[ 11.480457] pcieport 0004:00:00.0: AER: enabled with IRQ 53

[ 11.514349] tegra194-pcie 141a0000.pcie: Using GICv2m MSI allocator

[ 11.525231] tegra194-pcie 141a0000.pcie: Failed to get slot regulators: -517

[ 11.536253] vdd-3v3-pcie: supplied by vdd-3v3-sys

[ 11.613938] tegra194-pcie 141a0000.pcie: Using GICv2m MSI allocator

[ 11.735417] tegra194-pcie 141a0000.pcie: host bridge /pcie@141a0000 ranges:

[ 11.742613] tegra194-pcie 141a0000.pcie: IO 0x003a100000…0x003a1fffff → 0x003a100000

[ 11.751309] tegra194-pcie 141a0000.pcie: MEM 0x2b28000000…0x2b2fffffff → 0x0040000000

[ 11.760006] tegra194-pcie 141a0000.pcie: MEM 0x2740000000…0x2b27ffffff → 0x2740000000

[ 12.870643] tegra194-pcie 141a0000.pcie: Phy link never came up

[ 12.879230] tegra194-pcie 141a0000.pcie: PCI host bridge to bus 0005:00

[ 12.954554] pcieport 0005:00:00.0: Adding to iommu group 12

[ 12.960529] pcieport 0005:00:00.0: PME: Signaling with IRQ 55

[ 12.966692] pcieport 0005:00:00.0: AER: enabled with IRQ 55

Regards

YE
jetson_pcie_problem (79.9 KB)