target/linux/layerscape/patches-4.4/8230-layerscape-pci-fix-linkup-issue.patch

   1 From 1b23a4e0f03063f823ea38065c1106f62a56b408 Mon Sep 17 00:00:00 2001
   2 From: Mingkai Hu <mingkai.hu@nxp.com>
   3 Date: Mon, 7 Nov 2016 15:03:51 +0800
   4 Subject: [PATCH 230/238] layerscape/pci: fix linkup issue
   5
   6 commit e6612d785198abbb39142e2acb63f9bff26ab718
   7 [context adjustment]
   8
   9 Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
  10 Integrated-by: Zhao Qiang <qiang.zhao@nxp.com>
  11 ---
  12  drivers/pci/host/pci-layerscape.c |   13 +++++++++----
  13  1 file changed, 9 insertions(+), 4 deletions(-)
  14
  15 --- a/drivers/pci/host/pci-layerscape.c
  16 +++ b/drivers/pci/host/pci-layerscape.c
  17 @@ -158,11 +158,16 @@ static void ls1021_pcie_host_init(struct
  18  static int ls_pcie_link_up(struct pcie_port *pp)
  19  {
  20         struct ls_pcie *pcie = to_ls_pcie(pp);
  21 -       u32 state;
  22 +       u32 state, offset;
  23
  24 -       state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
  25 -                pcie->drvdata->ltssm_shift) &
  26 -                LTSSM_STATE_MASK;
  27 +       if (of_get_property(pp->dev->of_node, "fsl,lut_diff", NULL))
  28 +               offset = 0x407fc;
  29 +       else
  30 +               offset = PCIE_LUT_DBG;
  31 +
  32 +       state = (ioread32(pcie->lut + offset) >>
  33 +                       pcie->drvdata->ltssm_shift) &
  34 +               LTSSM_STATE_MASK;
  35
  36         if (state < LTSSM_PCIE_L0)
  37                 return 0;