PCIE C7 EP not work

[875225350]

hi ,
R35.3.1
update ODMDATA =“gbe-uphy-config-0,hsstp-lane-map-3,hsio-uphy-config-16,nvhs-uphy-config-0”

The following is the PCIE device tree that I modified

pcie_ep@141e0000 {
        status = "okay";

        num-lanes = <8>;

        nvidia,max-speed = <0x3>;

        reset-gpios = <&tegra_main_gpio TEGRA234_MAIN_GPIO(AG, 1) GPIO_ACTIVE_LOW>;

        phys = <&p2u_gbe_0>, <&p2u_gbe_1>, <&p2u_gbe_2>,
               <&p2u_gbe_3>, <&p2u_gbe_4>, <&p2u_gbe_5>,
               <&p2u_gbe_6>, <&p2u_gbe_7>;
        phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
                    "p2u-5", "p2u-6", "p2u-7";
};

When an error occurs during system startup:
[ 6.357309] tegra194-pcie 141e0000.pcie_ep: Adding to iommu group 9
[ 6.370587] tegra194-pcie 141e0000.pcie_ep: Failed to get PERST GPIO: -517
[ 6.370591] tegra194-pcie 141e0000.pcie_ep: Failed to parse device tree: -517

Boot the root port system.
endpoint device:# [ 560.998311] tegra194-pcie 141e0000.pcie_ep: Failed to init UPHY for PCIe EP: -22

• May I ask why the error ?
  thanks.

[WayneWWW]

please refer to the Flashing PCIe as Endpoint on a Jetson AGX Orin Series System section in the developer guide.

[875225350]

yes,I referred to the document.

#. Set the nvhs-uphy-config of the ODMDATA value, for example: ODMDATA="**gbe-uphy-config-22,nvhs-uphy-config-0,hsio-uphy-config-0**,gbe0-enable-10g,hsstp-lane-map-3"; to ODMDATA="**gbe-uphy-config-22,nvhs-uphy-config-1,hsio-uphy-config-0**,gbe0-enable-10g,hsstp-lane-map-3";

but

To select Configuration #2 :

`` ODMDATA =”gbe-uphy-config-0,hsstp-lane-map-3,hsio-uphy-config-16,**nvhs-uphy-config-0”;**``

If use PCIE C7.
how to choose ODMDATA value?

[875225350]

hi WayneWWW,
Follow these steps:
1.ODMDATA=“gbe-uphy-config-22,nvhs-uphy-config-1,hsio-uphy-config-0,gbe0-enable-10g,hsstp-lane-map-3”;
2.sudo ./flash.sh jetson-agx-orin-devkit mmcblk0p1
The same error occurs:

[    7.596310] tegra194-pcie 141a0000.pcie_ep: Adding to iommu group 9
[    7.609594] tegra194-pcie 141a0000.pcie_ep: Failed to get PERST GPIO: -517
[    7.609599] tegra194-pcie 141a0000.pcie_ep: Failed to parse device tree: -517
[    7.609887] tegra194-pcie 141e0000.pcie_ep: Adding to iommu group 10
[    7.622543] tegra194-pcie 141e0000.pcie_ep: Failed to get PERST GPIO: -517
[    7.622547] tegra194-pcie 141e0000.pcie_ep: Failed to parse device tree: -517

[WayneWWW]

Hi,

Please set gbe-uphy-config-1 as the document shared.

https://docs.nvidia.com/jetson/archives/r35.3.1/DeveloperGuide/text/HR/JetsonModuleAdaptationAndBringUp/JetsonAgxOrinSeries.html?highlight=gbe%20uphy

[875225350]

hi WayneWWW,
Glad to receive your reply.
I changed ODMDATA=“gbe-uphy-config-0,hsstp-lane-map-3,hsio-uphy-config-16,nvhs-uphy-config-0” to ODMDATA=“gbe-uphy-config-1,hsstp-lane-map-3,hsio-uphy-config-0,nvhs-uphy-config-0”.
sudo ./flash.sh jetson-agx-orin-devkit mmcblk0p1.
The above error log does not appear at present, but the root port does not recognize the PCIE.
In EP:

root@tegra-ubuntu:~# busybox devmem 0x141e00d0
0x00002000
root@tegra-ubuntu:~# busybox devmem 0x141e00cc
0x00000002

link down status?
May I ask what may be the cause?
thanks.

[WayneWWW]

Share your full dmesg please.

[875225350]

log (2).txt (66.5 KB)
ok.

[kayccc]

Sorry for the late response, have you managed to get issue resolved or still need the support? Thanks

[WayneWWW]

please check hardware/nvidia/platform/t23x/concord/kernel-dts/cvb/tegra234-p3737-pcie.dtsi and add corresponding setting as your hardware design to C7 ep node.