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To enable this feature, program the APPL_CTRL register with hardware hot reset with immediate LTSSM enable mode. Signed-off-by: Vidya Sagar Signed-off-by: Manikanta Maddireddy --- Changes V1 -> V6: 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/controller/dwc/pcie-tegra194.c index 110f2adb74d2..f6305a880cad 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -1775,6 +1775,8 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie) val = appl_readl(pcie, APPL_CTRL); val |= APPL_CTRL_SYS_PRE_DET_STATE; val |= APPL_CTRL_HW_HOT_RST_EN; + val &= ~(APPL_CTRL_HW_HOT_RST_MODE_MASK << APPL_CTRL_HW_HOT_RST_MODE_SHIFT); + val |= (APPL_CTRL_HW_HOT_RST_MODE_IMDT_RST_LTSSM_EN << APPL_CTRL_HW_HOT_RST_MODE_SHIFT); appl_writel(pcie, val, APPL_CTRL); val = appl_readl(pcie, APPL_CFG_MISC); -- 2.34.1