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pci: pci_mvebu: Setup PCI controller to Root Complex mode

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Root Complex should be the default mode, let's set it explicitly.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2021-10-22 16:22:14 +02:00 committed by Stefan Roese
parent 42ab3b3004
commit 2344a76f29
1 changed files with 6 additions and 0 deletions
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6
drivers/pci/pci_mvebu.c
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@ -62,6 +62,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define PCIE_MASK_ENABLE_INTS (0xf << 24)
#define PCIE_CTRL_OFF 0x1a00
#define PCIE_CTRL_X1_MODE BIT(0)
#define PCIE_CTRL_RC_MODE BIT(1)
#define PCIE_STAT_OFF 0x1a04
#define PCIE_STAT_BUS (0xff << 8)
#define PCIE_STAT_DEV (0x1f << 16)
@ -373,6 +374,11 @@ static int mvebu_pcie_probe(struct udevice *dev)
struct pci_controller *hose = dev_get_uclass_priv(ctlr);
u32 reg;
/* Setup PCIe controller to Root Complex mode */
reg = readl(pcie->base + PCIE_CTRL_OFF);
reg |= PCIE_CTRL_RC_MODE;
writel(reg, pcie->base + PCIE_CTRL_OFF);
/*
* Change Class Code of PCI Bridge device to PCI Bridge (0x600400)
* because default value is Memory controller (0x508000) which