diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie-designware.c | 14 | ||||
| -rw-r--r-- | drivers/pci/pcie-designware.h | 1 |
2 files changed, 9 insertions, 6 deletions
diff --git a/drivers/pci/pcie-designware.c b/drivers/pci/pcie-designware.c index 91aac8dec0..f9a759b8fd 100644 --- a/drivers/pci/pcie-designware.c +++ b/drivers/pci/pcie-designware.c @@ -257,13 +257,15 @@ void dw_pcie_setup(struct dw_pcie *pci) struct device_d *dev = pci->dev; struct device_node *np = dev->device_node; - /* Get iATU unroll support */ - pci->iatu_unroll_enabled = dw_pcie_iatu_unroll_enabled(pci); - dev_dbg(pci->dev, "iATU unroll: %s\n", - pci->iatu_unroll_enabled ? "enabled" : "disabled"); + if (pci->version >= 0x480A || (!pci->version && + dw_pcie_iatu_unroll_enabled(pci))) { + pci->iatu_unroll_enabled = true; + if (!pci->atu_base) + pci->atu_base = pci->dbi_base + DEFAULT_DBI_ATU_OFFSET; + } + dev_dbg(pci->dev, "iATU unroll: %s\n", pci->iatu_unroll_enabled ? + "enabled" : "disabled"); - if (pci->iatu_unroll_enabled && !pci->atu_base) - pci->atu_base = pci->dbi_base + DEFAULT_DBI_ATU_OFFSET; ret = of_property_read_u32(np, "num-lanes", &lanes); if (ret) diff --git a/drivers/pci/pcie-designware.h b/drivers/pci/pcie-designware.h index 30bdc0ed6e..8cd48a27c1 100644 --- a/drivers/pci/pcie-designware.h +++ b/drivers/pci/pcie-designware.h @@ -164,6 +164,7 @@ struct dw_pcie { u8 iatu_unroll_enabled; struct pcie_port pp; const struct dw_pcie_ops *ops; + unsigned int version; }; #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp) |