PCIe Link in IMX8DXL

[ankita_hegde]

Dear Team,

We are using an iMX8DXL processor and Linux 5.4.24 BSP. We are not able to detect the PCIe link in the board. We have configured it as below:

&pcieb {
compatible = "fsl,imx8qxp-pcie","snps,dw-pcie";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pcieb>;
clkreq-gpio = <&lsio_gpio4 1 GPIO_ACTIVE_HIGH>;
reset-gpio = <&lsio_gpio4 0 GPIO_ACTIVE_LOW>;
ext_osc = <0>;
epdev_on-supply = <&reg_3p3v>;
aspm-quirks = <1>;
aspm-enable;
status = "okay";
};

pinctrl:

pinctrl_pcieb: pcieagrp{
fsl,pins = <
IMX8DXL_PCIE_CTRL0_PERST_B_LSIO_GPIO4_IO00 0x06000021
IMX8DXL_PCIE_CTRL0_CLKREQ_B_LSIO_GPIO4_IO01 0x26000020
IMX8DXL_PCIE_CTRL0_WAKE_B_LSIO_GPIO4_IO02 0x06000021
>;
};

Do let us know if you have any suggestions that we can try to resolve this issue.

Regards,

Ankita

[AldoG]

Hello,

Could you share any logs regarding PCIe?
I believe that you are using a custom board and not an NXP one, correct?
Please share the output of dmesg | grep pcie
Also, could you share what are you trying to connect?

Best regards/Saludos,
Aldo.