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charset="utf-8" From: Vidya Sagar When PCIe link goes down, hardware can retrain the link and try to link up. To enable this feature, program the APPL_CTRL register with hardware hot reset with immediate LTSSM enable mode. Reviewed-by: Jon Hunter Tested-by: Jon Hunter Signed-off-by: Vidya Sagar Signed-off-by: Manikanta Maddireddy --- Changes V1 -> V8: None drivers/pci/controller/dwc/pcie-tegra194.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/contr= oller/dwc/pcie-tegra194.c index b312d02f8dab..4527d4759e42 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -1791,6 +1791,8 @@ static void pex_ep_event_pex_rst_deassert(struct tegr= a_pcie_dw *pcie) val =3D appl_readl(pcie, APPL_CTRL); val |=3D APPL_CTRL_SYS_PRE_DET_STATE; val |=3D APPL_CTRL_HW_HOT_RST_EN; + val &=3D ~(APPL_CTRL_HW_HOT_RST_MODE_MASK << APPL_CTRL_HW_HOT_RST_MODE_SH= IFT); + val |=3D (APPL_CTRL_HW_HOT_RST_MODE_IMDT_RST_LTSSM_EN << APPL_CTRL_HW_HOT= _RST_MODE_SHIFT); appl_writel(pcie, val, APPL_CTRL); =20 val =3D appl_readl(pcie, APPL_CFG_MISC); --=20 2.34.1