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| author |   Kunihiko Hayashi <hayashi.kunihiko@socionext.com> | 2020-09-30 14:36:06 +0900 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-10-13 09:52:49 +0100 |
| commit | 13ab639ed48c1e777682d1a80097594d21a193dc (patch) | |
| tree | a287c52ecf387b6a6a503139ef4a64fb1015f806 /drivers/pci/controller | |
| parent | dt-bindings: PCI: uniphier-ep: Add iATU register description (diff) | |
| download | wireguard-linux-13ab639ed48c1e777682d1a80097594d21a193dc.tar.xz wireguard-linux-13ab639ed48c1e777682d1a80097594d21a193dc.zip | |
PCI: dwc: Add common iATU register support
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.
Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1601444167-11316-4-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Murali Karicheri <m-karicheri2@ti.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Diffstat (limited to 'drivers/pci/controller')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 3c1f17c78241..c2dea8fc97c8 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 ? |