| Message ID | 1601255133-17715-4-git-send-email-hayashi.kunihiko@socionext.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | PCI: dwc: Move iATU register mapping to common framework | expand |
On Sun, Sep 27, 2020 at 8:05 PM Kunihiko Hayashi <hayashi.kunihiko@socionext.com> wrote: > > 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 <m-karicheri2@ti.com> > Cc: Jingoo Han <jingoohan1@gmail.com> > Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com> > Suggested-by: Rob Herring <robh@kernel.org> > Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> > --- > drivers/pci/controller/dwc/pcie-designware.c | 5 +++++ > 1 file changed, 5 insertions(+) Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 3fe859f..b6b39af 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" @@ -548,11 +549,15 @@ 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 = to_platform_device(dev); if (pci->version >= 0x480A || (!pci->version && dw_pcie_iatu_unroll_enabled(pci))) { pci->iatu_unroll_enabled = true; if (!pci->atu_base) + pci->atu_base = + devm_platform_ioremap_resource_byname(pdev, "atu"); + if (IS_ERR(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 ?
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 <m-karicheri2@ti.com> Cc: Jingoo Han <jingoohan1@gmail.com> Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> --- drivers/pci/controller/dwc/pcie-designware.c | 5 +++++ 1 file changed, 5 insertions(+)