Commit 8b5742ad authored May 28, 2014 by Murali Karicheri Committed by Bjorn Helgaas May 30, 2014

ARM/PCI: Call pcie_bus_configure_settings() to set MPS



Call pcie_bus_configure_settings() on ARM, like for other platforms.
pcie_bus_configure_settings() makes sure the MPS across the bus is uniform
and provides the ability to tune the MRSS and MPS to higher performance
values.  This is particularly important for embedded where there is no
firmware to program these PCIe settings for the OS.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Russell King <linux@arm.linux.org.uk>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
CC: Santosh Shilimkar <santosh.shilimkar@ti.com>

parent c893d133

arch/arm/kernel/bios32.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -545,6 +545,18 @@ void pci_common_init_dev(struct device parent, struct hw_pci hw)
		*/
		pci_bus_add_devices(bus);
		}

		list_for_each_entry(sys, &head, node) {
		struct pci_bus *bus = sys->bus;

		/* Configure PCI Express settings */
		if (bus && !pci_has_flag(PCI_PROBE_ONLY)) {
		struct pci_bus *child;

		list_for_each_entry(child, &bus->children, node)
		pcie_bus_configure_settings(child);
		}
		}
		}

		#ifndef CONFIG_PCI_HOST_ITE8152

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