This gets iATU register area from reg property that has reg-names "atu". In Synopsys DWC version 4.80 or later, since iATU register area is separated from core register area, this area is necessary to get from DT independently.
Cc: Murali Karicheri <[email protected]> Cc: Jingoo Han <[email protected]> Cc: Gustavo Pimentel <[email protected]> Suggested-by: Rob Herring <[email protected]> Signed-off-by: Kunihiko Hayashi <[email protected]> --- drivers/pci/controller/dwc/pcie-designware.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 4d105ef..4a360bc 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -10,6 +10,7 @@ #include <linux/delay.h> #include <linux/of.h> +#include <linux/of_platform.h> #include <linux/types.h> #include "../../pci.h" @@ -526,11 +527,16 @@ void dw_pcie_setup(struct dw_pcie *pci) u32 val; struct device *dev = pci->dev; struct device_node *np = dev->of_node; + struct platform_device *pdev; if (pci->version >= 0x480A || (!pci->version && dw_pcie_iatu_unroll_enabled(pci))) { pci->iatu_unroll_enabled = true; - if (!pci->atu_base) + pdev = of_find_device_by_node(np); + if (!pci->atu_base && pdev) + pci->atu_base = + devm_platform_ioremap_resource_byname(pdev, "atu"); + if (IS_ERR_OR_NULL(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 ? -- 2.7.4
