In “tegra194-p2888-p2822-pcie-plugin-manager.dtsi”, we can find the code below:
fragment-pcie-c5-rp {
odm-anded-override;
odm-data = "disable-pcie-c5-endpoint", "enable-nvhs-uphy-pcie-c5";
override@0 {
target = <&{/pcie@141a0000}>;
_overlay_ {
status = "okay";
};
};
override@1 {
target = <&{/pcie_ep@141a0000}>;
_overlay_ {
status = "disabled";
};
};
override@2 {
target = <&{/gpio@c2f0000/pex-refclk-sel-low}>;
_overlay_ {
status = "okay";
};
};
};
fragment-pcie-c5-ep {
odm-anded-override;
odm-data = "enable-pcie-c5-endpoint", "enable-nvhs-uphy-pcie-c5";
override@0 {
target = <&{/pcie@141a0000}>;
_overlay_ {
status = "disabled";
};
};
override@1 {
target = <&{/pcie_ep@141a0000}>;
_overlay_ {
status = "okay";
};
};
override@2 {
target = <&{/gpio@c2f0000/pex-refclk-sel-high}>;
_overlay_ {
status = "okay";
};
};
};
I am not very familiar with device tree. According to my understanding, “fragment-pcie-c5-rp” and “fragment-pcie-c5-ep” have conflict with each other. How these two fragments exist at the same time and make root-complex mode enabled?
Thanks.