From: Pali Rohár <pali@kernel.org>
Date: Fri, 22 Oct 2021 14:22:13 +0000 (+0200)
Subject: pci: pci_mvebu: Do not automatically enable bus mastering on PCI Bridge
X-Git-Tag: v2025.01-rc5-pxa1908~1652^2~22
X-Git-Url: http://git.dujemihanovic.xyz/img/html/static/%7B%7B?a=commitdiff_plain;h=42ab3b30046007f000adfd67427a72593f5b3d81;p=u-boot.git

pci: pci_mvebu: Do not automatically enable bus mastering on PCI Bridge

Now that PCI Bridge is working, U-Boot's CONFIG_PCI_PNP code automatically
enables memory access and bus mastering when it is needed. So do not
prematurely enable memory access and bus mastering.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
---

diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c
index 4cb237d2c4..4c7fd8d5a9 100644
--- a/drivers/pci/pci_mvebu.c
+++ b/drivers/pci/pci_mvebu.c
@@ -451,14 +451,6 @@ static int mvebu_pcie_probe(struct udevice *dev)
 	/* Setup windows and configure host bridge */
 	mvebu_pcie_setup_wins(pcie);
 
-	/* Master + slave enable. */
-	reg = readl(pcie->base + PCIE_CMD_OFF);
-	reg |= PCI_COMMAND_MEMORY;
-	reg |= PCI_COMMAND_IO;
-	reg |= PCI_COMMAND_MASTER;
-	reg |= BIT(10);		/* disable interrupts */
-	writel(reg, pcie->base + PCIE_CMD_OFF);
-
 	/* PCI memory space */
 	pci_set_region(hose->regions + 0, pcie->mem.start,
 		       pcie->mem.start, PCIE_MEM_SIZE, PCI_REGION_MEM);