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Commit 85aa1399 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Bjorn Helgaas
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PCI: dra7xx: Reset all BARs during initialization 



dra7xx has all base address registers (BAR) enabled by default. Reset all
BARs during initialization and so that BARs are enabled only if they are
actually used.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent a937fe08

drivers/pci/dwc/pci-dra7xx.c

+13 −0
Original line number Diff line number Diff line
@@ -335,10 +335,23 @@ static irqreturn_t dra7xx_pcie_irq_handler(int irq, void *arg) 
	return IRQ_HANDLED;

}



static void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)

{

	u32 reg;



	reg = PCI_BASE_ADDRESS_0 + (4 * bar);

	dw_pcie_writel_dbi2(pci, reg, 0x0);

	dw_pcie_writel_dbi(pci, reg, 0x0);

}



static void dra7xx_pcie_ep_init(struct dw_pcie_ep *ep)

{

	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);

	struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);

	enum pci_barno bar;



	for (bar = BAR_0; bar <= BAR_5; bar++)

		dw_pcie_ep_reset_bar(pci, bar);



	dra7xx_pcie_enable_wrapper_interrupts(dra7xx);

}