On Tue, Oct 15, 2019 at 08:29:22AM +0530, Pankaj Dubey wrote: > From: Anvesh Salveru <anvesh.s@xxxxxxxxxxx> > > In some platforms, PCIe PHY may have issues which will prevent linkup > to happen in GEN3 or higher speed. In case equalization fails, link will > fallback to GEN1. > > DesignWare controller gives flexibility to disable GEN3 equalization > completely or only phase 2 and 3 of equalization. > > This patch enables the DesignWare driver to disable the PCIe GEN3 > equalization by enabling one of the following quirks: > - DWC_EQUALIZATION_DISABLE: To disable GEN3 equalization all phases > - DWC_EQ_PHASE_2_3_DISABLE: To disable GEN3 equalization phase 2 & 3 > > Platform drivers can set these quirks via "quirk" variable of "dw_pcie" > struct. Please submit this together with the changes to the dwc frontend driver that actually wants to set these quirks.
