target/linux/mediatek/patches-6.1/611-pcie-mediatek-gen3-PERST-for-100ms.patch

   1 --- a/drivers/pci/controller/pcie-mediatek-gen3.c
   2 +++ b/drivers/pci/controller/pcie-mediatek-gen3.c
   3 @@ -350,9 +350,15 @@ static int mtk_pcie_startup_port(struct
   4         msleep(100);
   5
   6         /* De-assert reset signals */
   7 -       val &= ~(PCIE_MAC_RSTB | PCIE_PHY_RSTB | PCIE_BRG_RSTB | PCIE_PE_RSTB);
   8 +       val &= ~(PCIE_MAC_RSTB | PCIE_PHY_RSTB | PCIE_BRG_RSTB);
   9         writel_relaxed(val, pcie->base + PCIE_RST_CTRL_REG);
  10
  11 +       msleep(100);
  12 +
  13 +       /* De-assert PERST# signals */
  14 +       val &= ~(PCIE_PE_RSTB);
  15 +       writel_relaxed(val, port->base + PCIE_RST_CTRL_REG);
  16 +
  17         /* Check if the link is up or not */
  18         err = readl_poll_timeout(pcie->base + PCIE_LINK_STATUS_REG, val,
  19                                  !!(val & PCIE_PORT_LINKUP), 20,