Part Number: TMDX654IDKEVM
Hello TI Team,
first of all what i want to do in the end:
I want to connect a Board to a second Board via PCIe. One of them should be an End Point and the other an Root Complex.
Im currently struggling with the endpoint configuration of the TMDX654IDKEVM Board with the Sitara AM65x SR1 with Linux as OS on a SD-Card.
I am using the linux sdk version 7.00.01.06.
I was also following the steps for Kernel/Device Tree configuration:
https://software-dl.ti.com/processor-sdk-linux/esd/AM65X/07_00_01_06/exports/docs/linux/Foundational_Components_Kernel_Users_Guide.html
I think i did everything like described in the Guides, but i'm not sure if the patchfile provided in the Guide fits for the "k3-am654-pcie-usb2.dtso"-file is correct. Since the provided file makes changes after line 46. And the line which we want to change is in line 27. So can you provide me the correct patchfile?
Anyways, I tried to patch it manually with understanding how a patchfile works.
/ SPDX-License-Identifier: GPL-2.0
/**
* DT overlay for SERDES personality card: 2lane PCIe + USB2.0 Host on AM654 EVM
*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/phy/phy-am654-serdes.h>
#include <dt-bindings/pinctrl/k3.h>
&serdes0 {
assigned-clocks = <&k3_clks 153 4>, <&serdes0 AM654_SERDES_CMU_REFCLK>, <&serdes0 AM654_SERDES_RO_REFCLK>;
assigned-clock-parents = <&k3_clks 153 8>, <&k3_clks 153 4>, <&k3_clks 153 4>;
status = "okay";
};
&serdes1 {
assigned-clocks = <&serdes1 AM654_SERDES_CMU_REFCLK>;
assigned-clock-parents = <&serdes0 AM654_SERDES_RO_REFCLK>;
status = "okay";
};
&pcie0_ep {
num-lanes = <2>;
phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
phy-names = "pcie-phy0", "pcie-phy1";
status = "okay";
};
&pcie0_ep {
num-lanes = <2>;
phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
phy-names = "pcie-phy0", "pcie-phy1";
};
&main_pmx0 {
usb0_pins_default: usb0_pins_default {
pinctrl-single,pins = <
AM65X_IOPAD(0x02bc, PIN_OUTPUT, 0) /* (AD9) USB0_DRVVBUS */
>;
};
};
&dwc3_0 {
status = "okay";
};
&usb0_phy {
status = "okay";
};
&usb0 {
pinctrl-names = "default";
pinctrl-0 = <&usb0_pins_default>;
dr_mode = "host";
};
Commands I used:
mount -t configfs none /sys/kernel/config cd /sys/kernel/config/pci_ep/ mkdir functions/pci_epf_test/func1 echo 0x104c > functions/pci_epf_test/func1/vendorid echo 0xb00c > functions/pci_epf_test/func1/deviceid echo 16 > functions/pci_epf_test/func1/msi_interrupts echo 16 > functions/pci_epf_test/func1/msix_interrupts ln -s functions/pci_epf_test/func1 controllers/5500000.pcie-ep echo 1 > controllers/5500000.pcie-ep/start
The ln command does not work, because no controller can be found in the controllers directory. What went wrong?
Could you please help me fixing this issue?
Best regards
