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Synopsys DesignWare core based PCIe controllers in Tegra 194 SoC interface with Universal PHY (UPHY) module through a PIPE2UPHY (P2U) module. For each PCIe lane of a controller, there is a P2U unit instantiated at hardware level. This driver provides support for the programming required for each P2U that is going to be used for a PCIe controller. Signed-off-by: Vidya Sagar <[email protected]> Signed-off-by: Lorenzo Pieralisi <[email protected]> Acked-by: Kishon Vijay Abraham I <[email protected]> Acked-by: Thierry Reding <[email protected]>