On Tue, Dec 15, 2020 at 05:45:59PM +0530, Vidya Sagar wrote: > Thanks Mian for bringing it to our notice. > Have you tried removing the dw_pcie_setup_rc(pp); call from pcie-tegra194.c > file on top of linux-next? and does that solve the issue? > > diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c > b/drivers/pci/controller/dwc/pcie-tegra194.c > index 5597b2a49598..1c9e9c054592 100644 > --- a/drivers/pci/controller/dwc/pcie-tegra194.c > +++ b/drivers/pci/controller/dwc/pcie-tegra194.c > @@ -907,7 +907,7 @@ static void tegra_pcie_prepare_host(struct pcie_port > *pp) > dw_pcie_writel_dbi(pci, CFG_TIMER_CTRL_MAX_FUNC_NUM_OFF, > val); > } > > - dw_pcie_setup_rc(pp); > + //dw_pcie_setup_rc(pp); I still see the same issue with this change. Reverting b9ac0f9dc8ea works though. > > clk_set_rate(pcie->core_clk, GEN4_CORE_CLK_FREQ); > > I took a quick look at the dw_pcie_setup_rc() implementation and I'm not > sure why calling it second time should create any issue for the enumeration > of devices behind a switch. Perhaps I need to spend more time to debug that > part. > In any case, since dw_pcie_setup_rc() is already part of > dw_pcie_host_init(), I think it can be removed from > tegra_pcie_prepare_host() implemention. > > Thanks, > Vidya Sagar > BR, Yousaf
